[pve-devel] [PATCH proxmox-ve-rs 05/21] iprange: add methods for converting an ip range to cidrs
Max Carrara
m.carrara at proxmox.com
Tue Aug 13 18:09:22 CEST 2024
On Wed Jun 26, 2024 at 2:15 PM CEST, Stefan Hanreich wrote:
> This is mainly used in proxmox-perl-rs, so the generated ipsets can be
> used in pve-firewall where only CIDRs are supported.
>
> Signed-off-by: Stefan Hanreich <s.hanreich at proxmox.com>
> ---
> .../src/firewall/types/address.rs | 818 ++++++++++++++++++
> 1 file changed, 818 insertions(+)
>
> diff --git a/proxmox-ve-config/src/firewall/types/address.rs b/proxmox-ve-config/src/firewall/types/address.rs
> index 8db3942..3238601 100644
> --- a/proxmox-ve-config/src/firewall/types/address.rs
> +++ b/proxmox-ve-config/src/firewall/types/address.rs
> @@ -303,6 +303,17 @@ impl IpRange {
> ) -> Result<Self, IpRangeError> {
> Ok(IpRange::V6(AddressRange::new_v6(start, end)?))
> }
> +
> + /// converts an IpRange into the minimal amount of CIDRs
> + ///
> + /// see the concrete implementations of [`AddressRange<Ipv4Addr>`] or [`AddressRange<Ipv6Addr>`]
> + /// respectively
> + pub fn to_cidrs(&self) -> Vec<Cidr> {
> + match self {
> + IpRange::V4(range) => range.to_cidrs().into_iter().map(Cidr::from).collect(),
> + IpRange::V6(range) => range.to_cidrs().into_iter().map(Cidr::from).collect(),
> + }
> + }
> }
>
> impl std::str::FromStr for IpRange {
> @@ -362,6 +373,71 @@ impl AddressRange<Ipv4Addr> {
>
> Ok(Self { start, end })
> }
> +
> + /// returns the minimum amount of CIDRs that exactly represent the range
> + ///
> + /// The idea behind this algorithm is as follows:
> + ///
> + /// Start iterating with current = start of the IP range
> + ///
> + /// Find two netmasks
> + /// * The largest CIDR that the current IP can be the first of
> + /// * The largest CIDR that *only* contains IPs from current - end
> + ///
> + /// Add the smaller of the two CIDRs to our result and current to the first IP that is in
> + /// the range but not in the CIDR we just added. Proceed until we reached the end of the IP
> + /// range.
Would maaaaybe prefer some more inline formatting / minor rewording
regarding the algorithm's steps above, simply for readability's sake
(e.g. when rendering the docs).
Sort of like:
1. Start iteration: Set `current` to `start` of the IP range
2. Find two netmasks:
- The largest CIDR that the `current` IP can be the first of
- The largest CIDR that *only* contains IPs from `current` to `end`
3. Add the smaller of the two CIDRs to our result and `current` to the first IP that is in
the range but *not* in the CIDR we just added. Proceed until we reached the end of the IP
range.
Again, just a small thing, but thought I'd mention it.
> + ///
> + pub fn to_cidrs(&self) -> Vec<Ipv4Cidr> {
> + let mut cidrs = Vec::new();
> +
> + let mut current = u32::from_be_bytes(self.start.octets());
> + let end = u32::from_be_bytes(self.end.octets());
> +
> + if current == end {
> + // valid Ipv4 since netmask is 32
> + cidrs.push(Ipv4Cidr::new(current, 32).unwrap());
> + return cidrs;
> + }
> +
> + // special case this, since this is the only possibility of overflow
> + // when calculating delta_min_mask - makes everything a lot easier
> + if current == u32::MIN && end == u32::MAX {
> + // valid Ipv4 since it is `0.0.0.0/0`
> + cidrs.push(Ipv4Cidr::new(current, 0).unwrap());
> + return cidrs;
> + }
> +
> + while current <= end {
> + // netmask of largest CIDR that current IP can be the first of
> + // cast is safe, because trailing zeroes can at most be 32
> + let current_max_mask = IPV4_LENGTH - (current.trailing_zeros() as u8);
> +
> + // netmask of largest CIDR that *only* contains IPs of the remaining range
> + // is at most 32 due to unwrap_or returning 32 and ilog2 being at most 31
> + let delta_min_mask = ((end - current) + 1) // safe due to special case above
> + .checked_ilog2() // should never occur due to special case, but for good measure
> + .map(|mask| IPV4_LENGTH - mask as u8)
> + .unwrap_or(IPV4_LENGTH);
> +
> + // at most 32, due to current/delta being at most 32
> + let netmask = u8::max(current_max_mask, delta_min_mask);
> +
> + // netmask is at most 32, therefore safe to unwrap
> + cidrs.push(Ipv4Cidr::new(current, netmask).unwrap());
> +
> + let delta = 2u32.saturating_pow((IPV4_LENGTH - netmask).into());
> +
> + if let Some(result) = current.checked_add(delta) {
> + current = result
> + } else {
> + // we reached the end of IP address space
> + break;
> + }
> + }
> +
> + cidrs
> + }
> }
>
> impl AddressRange<Ipv6Addr> {
> @@ -377,6 +453,61 @@ impl AddressRange<Ipv6Addr> {
>
> Ok(Self { start, end })
> }
> +
> + /// returns the minimum amount of CIDRs that exactly represent the range
> + ///
> + /// This function works analogous to the IPv4 version, please refer to the respective
> + /// documentation of [`AddressRange<Ipv4Addr>`]
> + pub fn to_cidrs(&self) -> Vec<Ipv6Cidr> {
> + let mut cidrs = Vec::new();
> +
> + let mut current = u128::from_be_bytes(self.start.octets());
> + let end = u128::from_be_bytes(self.end.octets());
> +
> + if current == end {
> + // valid Ipv6 since netmask is 128
> + cidrs.push(Ipv6Cidr::new(current, 128).unwrap());
> + return cidrs;
> + }
> +
> + // special case this, since this is the only possibility of overflow
> + // when calculating delta_min_mask - makes everything a lot easier
> + if current == u128::MIN && end == u128::MAX {
> + // valid Ipv6 since it is `::/0`
> + cidrs.push(Ipv6Cidr::new(current, 0).unwrap());
> + return cidrs;
> + }
> +
> + while current <= end {
> + // netmask of largest CIDR that current IP can be the first of
> + // cast is safe, because trailing zeroes can at most be 128
> + let current_max_mask = IPV6_LENGTH - (current.trailing_zeros() as u8);
> +
> + // netmask of largest CIDR that *only* contains IPs of the remaining range
> + // is at most 128 due to unwrap_or returning 128 and ilog2 being at most 31
> + let delta_min_mask = ((end - current) + 1) // safe due to special case above
> + .checked_ilog2() // should never occur due to special case, but for good measure
> + .map(|mask| IPV6_LENGTH - mask as u8)
> + .unwrap_or(IPV6_LENGTH);
> +
> + // at most 128, due to current/delta being at most 128
> + let netmask = u8::max(current_max_mask, delta_min_mask);
> +
> + // netmask is at most 128, therefore safe to unwrap
> + cidrs.push(Ipv6Cidr::new(current, netmask).unwrap());
> +
> + let delta = 2u128.saturating_pow((IPV6_LENGTH - netmask).into());
> +
> + if let Some(result) = current.checked_add(delta) {
> + current = result
> + } else {
> + // we reached the end of IP address space
> + break;
> + }
> + }
> +
> + cidrs
> + }
> }
>
> impl<T> AddressRange<T> {
> @@ -811,4 +942,691 @@ mod tests {
> "10.0.0.1-10.0.0.0".parse::<IpRange>().unwrap_err();
> "2001:db8::1-2001:db8::0".parse::<IpRange>().unwrap_err();
> }
> +
> + #[test]
> + fn test_ipv4_to_cidrs() {
> + let range = AddressRange::new_v4([192, 168, 0, 100], [192, 168, 0, 100]).unwrap();
> +
> + assert_eq!(
> + [Ipv4Cidr::new([192, 168, 0, 100], 32).unwrap()],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([192, 168, 0, 100], [192, 168, 0, 200]).unwrap();
> +
> + assert_eq!(
> + [
> + Ipv4Cidr::new([192, 168, 0, 100], 30).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 104], 29).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 112], 28).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 128], 26).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 192], 29).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 200], 32).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([192, 168, 0, 101], [192, 168, 0, 200]).unwrap();
> +
> + assert_eq!(
> + [
> + Ipv4Cidr::new([192, 168, 0, 101], 32).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 102], 31).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 104], 29).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 112], 28).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 128], 26).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 192], 29).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 200], 32).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([192, 168, 0, 101], [192, 168, 0, 101]).unwrap();
> +
> + assert_eq!(
> + [Ipv4Cidr::new([192, 168, 0, 101], 32).unwrap()],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([192, 168, 0, 101], [192, 168, 0, 201]).unwrap();
> +
> + assert_eq!(
> + [
> + Ipv4Cidr::new([192, 168, 0, 101], 32).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 102], 31).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 104], 29).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 112], 28).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 128], 26).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 192], 29).unwrap(),
> + Ipv4Cidr::new([192, 168, 0, 200], 31).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([192, 168, 0, 0], [192, 168, 0, 255]).unwrap();
> +
> + assert_eq!(
> + [Ipv4Cidr::new([192, 168, 0, 0], 24).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([0, 0, 0, 0], [255, 255, 255, 255]).unwrap();
> +
> + assert_eq!(
> + [Ipv4Cidr::new([0, 0, 0, 0], 0).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([0, 0, 0, 1], [255, 255, 255, 255]).unwrap();
> +
> + assert_eq!(
> + [
> + Ipv4Cidr::new([0, 0, 0, 1], 32).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 2], 31).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 4], 30).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 8], 29).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 16], 28).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 32], 27).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 64], 26).unwrap(),
> + Ipv4Cidr::new([0, 0, 0, 128], 25).unwrap(),
> + Ipv4Cidr::new([0, 0, 1, 0], 24).unwrap(),
> + Ipv4Cidr::new([0, 0, 2, 0], 23).unwrap(),
> + Ipv4Cidr::new([0, 0, 4, 0], 22).unwrap(),
> + Ipv4Cidr::new([0, 0, 8, 0], 21).unwrap(),
> + Ipv4Cidr::new([0, 0, 16, 0], 20).unwrap(),
> + Ipv4Cidr::new([0, 0, 32, 0], 19).unwrap(),
> + Ipv4Cidr::new([0, 0, 64, 0], 18).unwrap(),
> + Ipv4Cidr::new([0, 0, 128, 0], 17).unwrap(),
> + Ipv4Cidr::new([0, 1, 0, 0], 16).unwrap(),
> + Ipv4Cidr::new([0, 2, 0, 0], 15).unwrap(),
> + Ipv4Cidr::new([0, 4, 0, 0], 14).unwrap(),
> + Ipv4Cidr::new([0, 8, 0, 0], 13).unwrap(),
> + Ipv4Cidr::new([0, 16, 0, 0], 12).unwrap(),
> + Ipv4Cidr::new([0, 32, 0, 0], 11).unwrap(),
> + Ipv4Cidr::new([0, 64, 0, 0], 10).unwrap(),
> + Ipv4Cidr::new([0, 128, 0, 0], 9).unwrap(),
> + Ipv4Cidr::new([1, 0, 0, 0], 8).unwrap(),
> + Ipv4Cidr::new([2, 0, 0, 0], 7).unwrap(),
> + Ipv4Cidr::new([4, 0, 0, 0], 6).unwrap(),
> + Ipv4Cidr::new([8, 0, 0, 0], 5).unwrap(),
> + Ipv4Cidr::new([16, 0, 0, 0], 4).unwrap(),
> + Ipv4Cidr::new([32, 0, 0, 0], 3).unwrap(),
> + Ipv4Cidr::new([64, 0, 0, 0], 2).unwrap(),
> + Ipv4Cidr::new([128, 0, 0, 0], 1).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([0, 0, 0, 0], [255, 255, 255, 254]).unwrap();
> +
> + assert_eq!(
> + [
> + Ipv4Cidr::new([0, 0, 0, 0], 1).unwrap(),
> + Ipv4Cidr::new([128, 0, 0, 0], 2).unwrap(),
> + Ipv4Cidr::new([192, 0, 0, 0], 3).unwrap(),
> + Ipv4Cidr::new([224, 0, 0, 0], 4).unwrap(),
> + Ipv4Cidr::new([240, 0, 0, 0], 5).unwrap(),
> + Ipv4Cidr::new([248, 0, 0, 0], 6).unwrap(),
> + Ipv4Cidr::new([252, 0, 0, 0], 7).unwrap(),
> + Ipv4Cidr::new([254, 0, 0, 0], 8).unwrap(),
> + Ipv4Cidr::new([255, 0, 0, 0], 9).unwrap(),
> + Ipv4Cidr::new([255, 128, 0, 0], 10).unwrap(),
> + Ipv4Cidr::new([255, 192, 0, 0], 11).unwrap(),
> + Ipv4Cidr::new([255, 224, 0, 0], 12).unwrap(),
> + Ipv4Cidr::new([255, 240, 0, 0], 13).unwrap(),
> + Ipv4Cidr::new([255, 248, 0, 0], 14).unwrap(),
> + Ipv4Cidr::new([255, 252, 0, 0], 15).unwrap(),
> + Ipv4Cidr::new([255, 254, 0, 0], 16).unwrap(),
> + Ipv4Cidr::new([255, 255, 0, 0], 17).unwrap(),
> + Ipv4Cidr::new([255, 255, 128, 0], 18).unwrap(),
> + Ipv4Cidr::new([255, 255, 192, 0], 19).unwrap(),
> + Ipv4Cidr::new([255, 255, 224, 0], 20).unwrap(),
> + Ipv4Cidr::new([255, 255, 240, 0], 21).unwrap(),
> + Ipv4Cidr::new([255, 255, 248, 0], 22).unwrap(),
> + Ipv4Cidr::new([255, 255, 252, 0], 23).unwrap(),
> + Ipv4Cidr::new([255, 255, 254, 0], 24).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 0], 25).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 128], 26).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 192], 27).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 224], 28).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 240], 29).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 248], 30).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 252], 31).unwrap(),
> + Ipv4Cidr::new([255, 255, 255, 254], 32).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([0, 0, 0, 0], [0, 0, 0, 0]).unwrap();
> +
> + assert_eq!(
> + [Ipv4Cidr::new([0, 0, 0, 0], 32).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v4([255, 255, 255, 255], [255, 255, 255, 255]).unwrap();
> +
> + assert_eq!(
> + [Ipv4Cidr::new([255, 255, 255, 255], 32).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> + }
> +
> + #[test]
> + fn test_ipv6_to_cidrs() {
> + let range = AddressRange::new_v6(
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1000],
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1000],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1000], 128).unwrap()],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1000],
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x2000],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1000], 116).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x2000], 128).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001],
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x2000],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001], 128).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1002], 127).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1004], 126).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1008], 125).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1010], 124).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1020], 123).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1040], 122).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1080], 121).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1100], 120).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1200], 119).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1400], 118).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1800], 117).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x2000], 128).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001],
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001], 128).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001],
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x2001],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1001], 128).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1002], 127).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1004], 126).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1008], 125).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1010], 124).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1020], 123).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1040], 122).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1080], 121).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1100], 120).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1200], 119).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1400], 118).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x1800], 117).unwrap(),
> + Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0x2000], 127).unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0],
> + [0x2001, 0x0DB8, 0, 0, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [Ipv6Cidr::new([0x2001, 0x0DB8, 0, 0, 0, 0, 0, 0], 64).unwrap()],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0, 0, 0, 0, 0, 0, 0, 0],
> + [
> + 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
> + ],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [Ipv6Cidr::new([0, 0, 0, 0, 0, 0, 0, 0], 0).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0, 0, 0, 0, 0, 0, 0, 0x0001],
> + [
> + 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
> + ],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [
> + "::1/128".parse::<Ipv6Cidr>().unwrap(),
> + "::2/127".parse::<Ipv6Cidr>().unwrap(),
> + "::4/126".parse::<Ipv6Cidr>().unwrap(),
> + "::8/125".parse::<Ipv6Cidr>().unwrap(),
> + "::10/124".parse::<Ipv6Cidr>().unwrap(),
> + "::20/123".parse::<Ipv6Cidr>().unwrap(),
> + "::40/122".parse::<Ipv6Cidr>().unwrap(),
> + "::80/121".parse::<Ipv6Cidr>().unwrap(),
> + "::100/120".parse::<Ipv6Cidr>().unwrap(),
> + "::200/119".parse::<Ipv6Cidr>().unwrap(),
> + "::400/118".parse::<Ipv6Cidr>().unwrap(),
> + "::800/117".parse::<Ipv6Cidr>().unwrap(),
> + "::1000/116".parse::<Ipv6Cidr>().unwrap(),
> + "::2000/115".parse::<Ipv6Cidr>().unwrap(),
> + "::4000/114".parse::<Ipv6Cidr>().unwrap(),
> + "::8000/113".parse::<Ipv6Cidr>().unwrap(),
> + "::1:0/112".parse::<Ipv6Cidr>().unwrap(),
> + "::2:0/111".parse::<Ipv6Cidr>().unwrap(),
> + "::4:0/110".parse::<Ipv6Cidr>().unwrap(),
> + "::8:0/109".parse::<Ipv6Cidr>().unwrap(),
> + "::10:0/108".parse::<Ipv6Cidr>().unwrap(),
> + "::20:0/107".parse::<Ipv6Cidr>().unwrap(),
> + "::40:0/106".parse::<Ipv6Cidr>().unwrap(),
> + "::80:0/105".parse::<Ipv6Cidr>().unwrap(),
> + "::100:0/104".parse::<Ipv6Cidr>().unwrap(),
> + "::200:0/103".parse::<Ipv6Cidr>().unwrap(),
> + "::400:0/102".parse::<Ipv6Cidr>().unwrap(),
> + "::800:0/101".parse::<Ipv6Cidr>().unwrap(),
> + "::1000:0/100".parse::<Ipv6Cidr>().unwrap(),
> + "::2000:0/99".parse::<Ipv6Cidr>().unwrap(),
> + "::4000:0/98".parse::<Ipv6Cidr>().unwrap(),
> + "::8000:0/97".parse::<Ipv6Cidr>().unwrap(),
> + "::1:0:0/96".parse::<Ipv6Cidr>().unwrap(),
> + "::2:0:0/95".parse::<Ipv6Cidr>().unwrap(),
> + "::4:0:0/94".parse::<Ipv6Cidr>().unwrap(),
> + "::8:0:0/93".parse::<Ipv6Cidr>().unwrap(),
> + "::10:0:0/92".parse::<Ipv6Cidr>().unwrap(),
> + "::20:0:0/91".parse::<Ipv6Cidr>().unwrap(),
> + "::40:0:0/90".parse::<Ipv6Cidr>().unwrap(),
> + "::80:0:0/89".parse::<Ipv6Cidr>().unwrap(),
> + "::100:0:0/88".parse::<Ipv6Cidr>().unwrap(),
> + "::200:0:0/87".parse::<Ipv6Cidr>().unwrap(),
> + "::400:0:0/86".parse::<Ipv6Cidr>().unwrap(),
> + "::800:0:0/85".parse::<Ipv6Cidr>().unwrap(),
> + "::1000:0:0/84".parse::<Ipv6Cidr>().unwrap(),
> + "::2000:0:0/83".parse::<Ipv6Cidr>().unwrap(),
> + "::4000:0:0/82".parse::<Ipv6Cidr>().unwrap(),
> + "::8000:0:0/81".parse::<Ipv6Cidr>().unwrap(),
> + "::1:0:0:0/80".parse::<Ipv6Cidr>().unwrap(),
> + "::2:0:0:0/79".parse::<Ipv6Cidr>().unwrap(),
> + "::4:0:0:0/78".parse::<Ipv6Cidr>().unwrap(),
> + "::8:0:0:0/77".parse::<Ipv6Cidr>().unwrap(),
> + "::10:0:0:0/76".parse::<Ipv6Cidr>().unwrap(),
> + "::20:0:0:0/75".parse::<Ipv6Cidr>().unwrap(),
> + "::40:0:0:0/74".parse::<Ipv6Cidr>().unwrap(),
> + "::80:0:0:0/73".parse::<Ipv6Cidr>().unwrap(),
> + "::100:0:0:0/72".parse::<Ipv6Cidr>().unwrap(),
> + "::200:0:0:0/71".parse::<Ipv6Cidr>().unwrap(),
> + "::400:0:0:0/70".parse::<Ipv6Cidr>().unwrap(),
> + "::800:0:0:0/69".parse::<Ipv6Cidr>().unwrap(),
> + "::1000:0:0:0/68".parse::<Ipv6Cidr>().unwrap(),
> + "::2000:0:0:0/67".parse::<Ipv6Cidr>().unwrap(),
> + "::4000:0:0:0/66".parse::<Ipv6Cidr>().unwrap(),
> + "::8000:0:0:0/65".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:1::/64".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:2::/63".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:4::/62".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:8::/61".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:10::/60".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:20::/59".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:40::/58".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:80::/57".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:100::/56".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:200::/55".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:400::/54".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:800::/53".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:1000::/52".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:2000::/51".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:4000::/50".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:0:8000::/49".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:1::/48".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:2::/47".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:4::/46".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:8::/45".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:10::/44".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:20::/43".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:40::/42".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:80::/41".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:100::/40".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:200::/39".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:400::/38".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:800::/37".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:1000::/36".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:2000::/35".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:4000::/34".parse::<Ipv6Cidr>().unwrap(),
> + "0:0:8000::/33".parse::<Ipv6Cidr>().unwrap(),
> + "0:1::/32".parse::<Ipv6Cidr>().unwrap(),
> + "0:2::/31".parse::<Ipv6Cidr>().unwrap(),
> + "0:4::/30".parse::<Ipv6Cidr>().unwrap(),
> + "0:8::/29".parse::<Ipv6Cidr>().unwrap(),
> + "0:10::/28".parse::<Ipv6Cidr>().unwrap(),
> + "0:20::/27".parse::<Ipv6Cidr>().unwrap(),
> + "0:40::/26".parse::<Ipv6Cidr>().unwrap(),
> + "0:80::/25".parse::<Ipv6Cidr>().unwrap(),
> + "0:100::/24".parse::<Ipv6Cidr>().unwrap(),
> + "0:200::/23".parse::<Ipv6Cidr>().unwrap(),
> + "0:400::/22".parse::<Ipv6Cidr>().unwrap(),
> + "0:800::/21".parse::<Ipv6Cidr>().unwrap(),
> + "0:1000::/20".parse::<Ipv6Cidr>().unwrap(),
> + "0:2000::/19".parse::<Ipv6Cidr>().unwrap(),
> + "0:4000::/18".parse::<Ipv6Cidr>().unwrap(),
> + "0:8000::/17".parse::<Ipv6Cidr>().unwrap(),
> + "1::/16".parse::<Ipv6Cidr>().unwrap(),
> + "2::/15".parse::<Ipv6Cidr>().unwrap(),
> + "4::/14".parse::<Ipv6Cidr>().unwrap(),
> + "8::/13".parse::<Ipv6Cidr>().unwrap(),
> + "10::/12".parse::<Ipv6Cidr>().unwrap(),
> + "20::/11".parse::<Ipv6Cidr>().unwrap(),
> + "40::/10".parse::<Ipv6Cidr>().unwrap(),
> + "80::/9".parse::<Ipv6Cidr>().unwrap(),
> + "100::/8".parse::<Ipv6Cidr>().unwrap(),
> + "200::/7".parse::<Ipv6Cidr>().unwrap(),
> + "400::/6".parse::<Ipv6Cidr>().unwrap(),
> + "800::/5".parse::<Ipv6Cidr>().unwrap(),
> + "1000::/4".parse::<Ipv6Cidr>().unwrap(),
> + "2000::/3".parse::<Ipv6Cidr>().unwrap(),
> + "4000::/2".parse::<Ipv6Cidr>().unwrap(),
> + "8000::/1".parse::<Ipv6Cidr>().unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [0, 0, 0, 0, 0, 0, 0, 0],
> + [
> + 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFE,
> + ],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [
> + "::/1".parse::<Ipv6Cidr>().unwrap(),
> + "8000::/2".parse::<Ipv6Cidr>().unwrap(),
> + "c000::/3".parse::<Ipv6Cidr>().unwrap(),
> + "e000::/4".parse::<Ipv6Cidr>().unwrap(),
> + "f000::/5".parse::<Ipv6Cidr>().unwrap(),
> + "f800::/6".parse::<Ipv6Cidr>().unwrap(),
> + "fc00::/7".parse::<Ipv6Cidr>().unwrap(),
> + "fe00::/8".parse::<Ipv6Cidr>().unwrap(),
> + "ff00::/9".parse::<Ipv6Cidr>().unwrap(),
> + "ff80::/10".parse::<Ipv6Cidr>().unwrap(),
> + "ffc0::/11".parse::<Ipv6Cidr>().unwrap(),
> + "ffe0::/12".parse::<Ipv6Cidr>().unwrap(),
> + "fff0::/13".parse::<Ipv6Cidr>().unwrap(),
> + "fff8::/14".parse::<Ipv6Cidr>().unwrap(),
> + "fffc::/15".parse::<Ipv6Cidr>().unwrap(),
> + "fffe::/16".parse::<Ipv6Cidr>().unwrap(),
> + "ffff::/17".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:8000::/18".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:c000::/19".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:e000::/20".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:f000::/21".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:f800::/22".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:fc00::/23".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:fe00::/24".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ff00::/25".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ff80::/26".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffc0::/27".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffe0::/28".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:fff0::/29".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:fff8::/30".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:fffc::/31".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:fffe::/32".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff::/33".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:8000::/34".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:c000::/35".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:e000::/36".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:f000::/37".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:f800::/38".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:fc00::/39".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:fe00::/40".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ff00::/41".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ff80::/42".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffc0::/43".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffe0::/44".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:fff0::/45".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:fff8::/46".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:fffc::/47".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:fffe::/48".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff::/49".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:8000::/50".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:c000::/51".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:e000::/52".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:f000::/53".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:f800::/54".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:fc00::/55".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:fe00::/56".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ff00::/57".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ff80::/58".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffc0::/59".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffe0::/60".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:fff0::/61".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:fff8::/62".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:fffc::/63".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:fffe::/64".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff::/65".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:8000::/66".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:c000::/67".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:e000::/68".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:f000::/69".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:f800::/70".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:fc00::/71".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:fe00::/72".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:ff00::/73".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:ff80::/74".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:ffc0::/75".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:ffe0::/76".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:fff0::/77".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:fff8::/78".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:fffc::/79".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:fffe::/80".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:ffff::/81".parse::<Ipv6Cidr>().unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:8000::/82"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:c000::/83"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:e000::/84"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:f000::/85"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:f800::/86"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:fc00::/87"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:fe00::/88"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ff00::/89"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ff80::/90"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffc0::/91"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffe0::/92"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:fff0::/93"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:fff8::/94"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:fffc::/95"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:fffe::/96"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff::/97"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:8000:0/98"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:c000:0/99"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:e000:0/100"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:f000:0/101"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:f800:0/102"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:fc00:0/103"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:fe00:0/104"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ff00:0/105"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ff80:0/106"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffc0:0/107"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffe0:0/108"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:fff0:0/109"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:fff8:0/110"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:fffc:0/111"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:fffe:0/112"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:0/113"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:8000/114"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:c000/115"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:e000/116"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:f000/117"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:f800/118"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fc00/119"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fe00/120"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00/121"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff80/122"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffc0/123"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0/124"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0/125"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8/126"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc/127"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe/128"
> + .parse::<Ipv6Cidr>()
> + .unwrap(),
> + ],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range =
> + AddressRange::new_v6([0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0]).unwrap();
> +
> + assert_eq!(
> + [Ipv6Cidr::new([0, 0, 0, 0, 0, 0, 0, 0], 128).unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> +
> + let range = AddressRange::new_v6(
> + [
> + 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
> + ],
> + [
> + 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
> + ],
> + )
> + .unwrap();
> +
> + assert_eq!(
> + [Ipv6Cidr::new(
> + [0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF],
> + 128
> + )
> + .unwrap(),],
> + range.to_cidrs().as_slice()
> + );
> + }
> }
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