Hi! I have now assigned this bug to bridge-utils and I've got this patch that should solve it, can you test it on your machine and let me know if it fixes the problem?
--- /lib/udev/bridge-network-interface~ 2021-02-16 20:59:36.397579972 +0100 +++ /lib/udev/bridge-network-interface 2021-02-16 20:59:45.777222821 +0100 @@ -30,6 +30,7 @@ create_vlan_port if [ -d /sys/class/net/$port ]; then ifup --allow auto $i + if [ -f /proc/sys/net/ipv6/conf/$port/disable_ipv6 ]; then echo 1 > /proc/sys/net/ipv6/conf/$port/disable_ipv6;fi brctl addif $i $port && ip link set dev $port up && if [ "$(ifquery "$i"|sed -n -e's/^bridge[_-]hw: //p')" = "$port" ]; then ip link set dev "$i" address "$(ip link show dev "$port" 2>/dev/null|sed -n "s|.*link/ether \([^ ]*\) brd.*|\1|p")" Regards. -- Manty/BestiaTester -> http://manty.net