Comment 35 for bug 1509414

> Doing so would require the CPC team to update /etc/default/lxc-net, setting USE_LXC_BRIDGE to false.

Note that this would cause a conffile prompt for all users using cloud images who dist-upgrade to pick up the latest updates after another lxc SRU, which breaks people doing automatic deployments (even though they could override, many don't). I think you're not planning to do this now anyway? Anyway, I think it's important for everyone to understand that altering conffiles as part of cloud image builds causes future problems and so need to be avoided - especially for default cases.