Public bug reported: Hi, I have an issue with ebtables that affects libvirt. While initially found in hirsute I had to realize this is broken in Groovy and even Bionic (might be a different reason back then) as well right now. But working in Focal (witch matches my memory of it being good before [1]).
I was isolating the commands that libvirt runs (identical between Focal and Hirsute) to find a simplified trigger. Gladly I found one that leaves libvirt and other components out of the equation. The following works on focal, but fails on the other releases. Note: I checked which tool is in use and in both cases it is xtables-nft-multi. /usr/sbin/ebtables -> /etc/alternatives/ebtables* /etc/alternatives/ebtables -> /usr/sbin/ebtables-nft* /usr/sbin/ebtables-nft -> xtables-nft-multi* So I converted the libvirt issued commands into xtables-nft-multi just to be sure in case a system to compare has other alternatives set. Focal (Good): /usr/sbin/xtables-nft-multi ebtables --concurrent -t nat -N testrule3 /usr/sbin/xtables-nft-multi ebtables --concurrent -t nat -E testrule3 testrule3-renamed <system is happy> Groovy/Hirsute (Fail): /usr/sbin/xtables-nft-multi ebtables --concurrent -t nat -N testrule3 /usr/sbin/xtables-nft-multi ebtables --concurrent -t nat -E testrule3 testrule3-renamed ebtables v1.8.5 (nf_tables): Chain 'testrule3' doesn't exists Try `ebtables -h' or 'ebtables --help' for more information. What might be the root cause for this? -- Old test instructions -- As I said I was tracking a fail in libvirt so the test instructions initially were around that: # the following us done as 2nd level guest (to not mess with the host, # but works on bare metal jst as much) uvt-kvm create --host-passthrough --memory 2048 --cpu 4 --disk 16 --password=ubuntu hirsute-kvm release=hirsute arch=amd64 label=daily # On guest then sudo apt update sudo apt install uvtool uvtool-libvirt uvt-simplestreams-libvirt --verbose sync --source http://cloud-images.ubuntu.com/daily arch=amd64 label=daily release=hirsute uvt-kvm create --disk 5 --machine-type ubuntu --password=ubuntu hirsute-2nd-lvm release=hirsute arch=amd64 label=daily uvt-kvm wait hirsute-2nd-lvm virsh shutdown hirsute-2nd-lvm virsh edit hirsute-2nd-lvm # add this to the network <filterref filter='clean-traffic'> <parameter name='CTRL_IP_LEARNING' value='dhcp'/> </filterref> virsh start hirsute-2nd-lvm error: Failed to start domain hirsute-2nd-nwfilter error: internal error: applyDHCPOnlyRules failed - spoofing not protected! FYI: Get helpful log details with these in /etc/libvirt/libvirtd.conf log_filters="1:util.firewall" log_outputs="1:syslog:libvirtd" -- -- [1]: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1758037 ** Affects: iptables (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1904192 Title: ebtables can not rename just created chain To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iptables/+bug/1904192/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
