[pve-devel] [PATCH pve-network] dnsmasq: configure static range for each subnet
Alexandre Derumier
aderumier at odiso.com
Wed Nov 15 16:13:50 CET 2023
we don't want dynamic lease, simply define each subnet as a static range.
dhcp-range defined on a subnet is only used by ipam plugin.
This will also allow to use dhcp subnet without need to define a range.
Can be usefull for external ipam like phpipam, where you can't define ranges.
Signed-off-by: Alexandre Derumier <aderumier at odiso.com>
---
src/PVE/Network/SDN/Dhcp/Dnsmasq.pm | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/src/PVE/Network/SDN/Dhcp/Dnsmasq.pm b/src/PVE/Network/SDN/Dhcp/Dnsmasq.pm
index 46172c5..2db7f4f 100644
--- a/src/PVE/Network/SDN/Dhcp/Dnsmasq.pm
+++ b/src/PVE/Network/SDN/Dhcp/Dnsmasq.pm
@@ -112,11 +112,18 @@ sub configure_subnet {
sub configure_range {
my ($class, $dhcpid, $subnet_config, $range_config) = @_;
- my $range_file = "$DNSMASQ_CONFIG_ROOT/$dhcpid/10-$subnet_config->{id}.ranges.conf",
+ my $subnet_file = "$DNSMASQ_CONFIG_ROOT/$dhcpid/10-$subnet_config->{id}.conf";
my $tag = $subnet_config->{id};
- open(my $fh, '>>', $range_file) or die "Could not open file '$range_file' $!\n";
- print $fh "dhcp-range=set:$tag,$range_config->{'start-address'},$range_config->{'end-address'}\n";
+ my ($zone, $network, $mask) = split(/-/, $tag);
+
+ if (Net::IP::ip_is_ipv4($network)) {
+ $mask = (2 ** $mask - 1) << (32 - $mask);
+ $mask = join( '.', unpack( "C4", pack( "N", $mask ) ) );
+ }
+
+ open(my $fh, '>>', $subnet_file) or die "Could not open file '$subnet_file' $!\n";
+ print $fh "dhcp-range=set:$tag,$network,static,$mask,infinite\n";
close $fh;
}
--
2.39.2
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