[pve-devel] [PATCH proxmox-firewall 0/3] create ipsets with auto-merge option enabled

Stefan Hanreich s.hanreich at proxmox.com
Thu Sep 25 18:12:44 CEST 2025


nftables interval sets do not merge overlapping / adjacent CIDRs / ranges by
default. Instead, nftables errors out, refusing to insert new set elements. This
was a problem with proxmox-firewall, since ip sets with overlapping entries
could cause the firewall daemon to refuse working.

Since v1.1.0 [1] (and therefore, Debian trixie) the nftables json interface
supports setting the auto-merge options for sets.

[1] https://www.netfilter.org/projects/nftables/files/changes-nftables-1.1.0.txt

proxmox-firewall:

Stefan Hanreich (3):
  nftables: add support for auto-merge set option
  firewall: set auto-merge flag for ipsets
  firewall: tests: regenerate snapshot

 proxmox-firewall/src/object.rs                |   8 +-
 .../integration_tests__firewall.snap          | 192 ++++++++++++------
 proxmox-nftables/src/types.rs                 |   9 +
 3 files changed, 142 insertions(+), 67 deletions(-)


Summary over all repositories:
  3 files changed, 142 insertions(+), 67 deletions(-)

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