Joseph, thanks for your help! Will need a bit of time to set up a testing environment for this.
If it helps anyone else with testing/debugging, it looks like the warning only happens on LXD container hosts that run containers which in turn connect to an IPSec VPN (using StrongSwan). We get them on LXD hosts with either "4.4.0-93-generic #116~14.04.1-Ubuntu" or "4.10.0-33-generic #37~16.04.1-Ubuntu". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1715609 Title: kernel warning: skb_warn_bad_offload To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1715609/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs