It appears that this issue concerns all Linux bridges:
# cat iptables/rules.v4 | grep lxcbr0 | sort | uniq -c
7 -A FORWARD -i lxcbr0 -j ACCEPT
7 -A FORWARD -o lxcbr0 -j ACCEPT
7 -A INPUT -i lxcbr0 -p tcp -m tcp --dport 53 -j ACCEPT
7 -A INPUT -i lxcbr0 -p tcp -m tcp --dport 67 -j ACCEPT
7 -A INPUT -i lxcbr0 -p udp -m udp --dport 53 -j ACCEPT
7 -A INPUT -i lxcbr0 -p udp -m udp --dport 67 -j ACCEPT
13 -A POSTROUTING -o lxcbr0 -p udp -m udp --dport 68 -j CHECKSUM
--checksum-fill
** Summary changed:
- iptables-save duplicates libvirt rules
+ iptables-save duplicates all rules related to Linux bridges
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https://bugs.launchpad.net/bugs/1738403
Title:
iptables-save duplicates all rules related to Linux bridges
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