Public bug reported:
This is another case of linux-kvm having unexplained differences
compared to linux-generic in areas that aren't related to hardware
drivers (see other bug we filed for missing nft).
This time, CPC is reporting that LXD no longer works on linux-kvm as we
now set vlan filtering on our bridges to prevent containers from
escaping firewalling through custom vlan tags.
This relies on CONFIG_BRIDGE_VLAN_FILTERING which is a built-in on the
generic kernel but is apparently missing on linux-kvm (I don't have any
system running that kernel to confirm its config, but the behavior
certainly matches that).
We need this fixed in focal and groovy.
** Affects: linux-kvm (Ubuntu)
Importance: Undecided
Status: Triaged
** Changed in: linux-kvm (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1882955
Title:
LXD 4.2 broken on linux-kvm due to missing VLAN filtering
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