Attaching a patch. I still couldn't think of a reason this code should
ever disable IPv6 on the physical interface, so it's removed
unconditionally. If anyone can think of such a reason, then I guess an
option could be added?
--
Anton Khirnov
From f8691b90f83c2058d82ac9b173b351ce3aa5b714 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <an...@khirnov.net>
Date: Thu, 20 Jan 2022 09:18:31 +0100
Subject: [PATCH] Do not disable IPv6 on the physical interface for a VLAN
port.
When one of the bridge ports is a VLAN interface, the ifupdown script
will currently disable IPv6 on the physical interface for that VLAN.
This is undesirable, since the user may want to use the physical
interface independently.
---
debian/bridge-utils.sh | 4 ----
1 file changed, 4 deletions(-)
diff --git a/debian/bridge-utils.sh b/debian/bridge-utils.sh
index a3bfe5f..915c5d0 100644
--- a/debian/bridge-utils.sh
+++ b/debian/bridge-utils.sh
@@ -64,10 +64,6 @@ then
# port is a vlan and the device exists?
if [ "$port" != "$dev" ] && [ -e "/sys/class/net/$dev" ]
then
- if [ -f /proc/sys/net/ipv6/conf/$dev/disable_ipv6 ]
- then
- echo 1 > /proc/sys/net/ipv6/conf/$dev/disable_ipv6
- fi
ip link set "$dev" up
ip link add link "$dev" name "$port" type vlan id "${port#*.}"
fi
--
2.30.2
