Groups > linux.debian.bugs.dist > #1060330

Bug#989162: bridge-utils: ifupdown scripts should not unconditionally disable IPv6 on physical interface

From	Anton Khirnov <anton@khirnov.net>
Newsgroups	linux.debian.bugs.dist
Subject	Bug#989162: bridge-utils: ifupdown scripts should not unconditionally disable IPv6 on physical interface
Date	2021-05-27 09:40 +0200
Message-ID	<CjiMx-4Y4-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Package: bridge-utils
Version: 1.7-1
Severity: normal
Tags: ipv6

Dear Maintainer, when using the network/interfaces scripts to set up a
bridge, they will automatically and unconditionally disable ipv6 not
only on the ports added to the bridge, but also on the underlying
physical device (if the port is a VLAN device). This is not always
desirable (actually I wonder if it's ever desirable), e.g. in my setup
I'm bridging a VLAN device on my physical NIC with veth devices attached
to LXC containers, so the containers' traffic is always sent to a
specific VLAN. However I still want to use the physical interface for
the host's own traffic.

Thanks,
-- 
Anton Khirnov

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable-debug'), (500, 'testing'), (500, 'stable'), (400, 'unstable'), (300, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-11-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages bridge-utils depends on:
ii  libc6  2.31-11

bridge-utils recommends no packages.

Versions of packages bridge-utils suggests:
ii  ifupdown  0.8.36

-- no debconf information

-- debsums errors found:
debsums: changed file /lib/bridge-utils/bridge-utils.sh (from bridge-utils package)
debsums: changed file /lib/bridge-utils/ifupdown.sh (from bridge-utils package)
^^ the local changes are just commenting out the lines disabling ipv6

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Bug#989162: bridge-utils: ifupdown scripts should not unconditionally disable IPv6 on physical interface Anton Khirnov <anton@khirnov.net> - 2021-05-27 09:40 +0200

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