[Bug 2061891] Re: Noble upgrade breaks iptables-persistent and netfilter-persistent usage

[Mauricio Faria de Oliveira]

Ok; thanks for clarifying.

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Title:
  Noble upgrade breaks iptables-persistent and netfilter-persistent
  usage

Status in Release Notes for Ubuntu:
  New
Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress
Status in ubuntu-release-upgrader source package in Noble:
  In Progress

Bug description:
  [Impact]
  ufw and -persistent packages both manage the firewall, hence they conflict but they accidentally had no conflicts in jammy. If both are installed, persistent packages will store and restore firewall configuration, so ufw cannot really be used.

  Noble adds a conflicts from ufw to the persistent packages, but we end
  up removing the persistent packages rather than the ufw which is wrong
  - they are in charge.

  [Test plan]
  persistent and netfilter-persistent should remain installed, and ufw removed to preserve user config.

  [Where problems could occur]
  There may be ufw reverse dependencies that could get removed.

  [Other Info]
  The fix (released) in 1:24.04.15 is reverted and improved in 1:24.04.17 (upload).

  [Original bug report]
  Upgrade from Jammy to Noble breaks iptables-persistent and netfilter-persistent firewall configuration if ufw is also installed pre-upgrade., removing them.

  from /var/log/dist-upgrade/apt.log:
  Broken ufw:amd64 Breaks on iptables-persistent:amd64 < 1.0.16 -> 1.0.20 @ii umU >
    Considering iptables-persistent:amd64 -1 as a solution to ufw:amd64 5
    Added iptables-persistent:amd64 to the remove list
    Conflicts//Breaks against version 1.0.16 for iptables-persistent but that is not InstVer, ignoring
  Broken ufw:amd64 Breaks on netfilter-persistent:amd64 < 1.0.16 -> 1.0.20 @ii umU >
    Considering netfilter-persistent:amd64 0 as a solution to ufw:amd64 5
    Added netfilter-persistent:amd64 to the remove list
    Conflicts//Breaks against version 1.0.16 for netfilter-persistent but that is not InstVer, ignoring
    MarkDelete iptables-persistent:amd64 < 1.0.16 -> 1.0.20 @ii umU > FU=0
    Fixing ufw:amd64 via remove of iptables-persistent:amd64
    MarkDelete netfilter-persistent:amd64 < 1.0.16 -> 1.0.20 @ii umU > FU=0
    Fixing ufw:amd64 via remove of netfilter-persistent:amd64

  ufw 0.36.2-1 add the breaks
  $ apt show ufw
  Package: ufw
  Version: 0.36.2-6
  Priority: standard
  Section: admin
  Origin: Ubuntu
  Maintainer: Jamie Strandboge <jdstrand at ubuntu.com>
  Bugs: https://bugs.launchpad.net/ubuntu/+filebug
  Installed-Size: 869 kB
  Depends: iptables, ucf, python3:any, debconf (>= 0.5) | debconf-2.0
  Suggests: rsyslog
  Breaks: iptables-persistent, netfilter-persistent
  Homepage: https://launchpad.net/ufw
  Task: standard
  Download-Size: 169 kB
  APT-Manual-Installed: no
  APT-Sources: http://phx-ad-3.clouds.archive.ubuntu.com/ubuntu noble/main amd64 Packages
  Description: program for managing a Netfilter firewall
   The Uncomplicated FireWall is a front-end for iptables, to make managing a
   Netfilter firewall easier. It provides a command line interface with syntax
   similar to OpenBSD's Packet Filter. It is particularly well-suited as a
   host-based firewall.

  Post do-release-upgrade, iptables-persistent and netfilter-persistent
  are removed, which breaks any machines that relied on their
  configuration.

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