In addition to the verification provided in comment #26 and #28 we've taken the neutron-api-plugin-ovn e2e charm gate with an added hairpin test for a spin for both Focal and Jammy where we found the control to fail as expected and successful test with the updated kernel. $ juju run --application nova-compute 'uname -a' - Stdout: | Linux civil-ibex 5.4.0-123-generic #139-Ubuntu SMP Mon Jul 11 16:02:31 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux UnitId: nova-compute/0 - Stdout: | Linux pumped-pika 5.4.0-123-generic #139-Ubuntu SMP Mon Jul 11 16:02:31 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux UnitId: nova-compute/1 - Stdout: | Linux moved-toucan 5.4.0-123-generic #139-Ubuntu SMP Mon Jul 11 16:02:31 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux UnitId: nova-compute/2 ... 2022-07-19 16:25:09 [INFO] XXX HAIRPIN 2022-07-19 16:25:09 [INFO] Attempting to ssh to instance-1(10.78.95.25) 2022-07-19 16:25:09 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:09 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:09 [INFO] Running ping -M do -s 1414 -c 1 10.78.95.25 on instance-1 2022-07-19 16:25:10 [INFO] Attempting to ssh to instance-1(10.78.95.25) 2022-07-19 16:25:10 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:10 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:10 [INFO] Running ping -M do -s 1414 -c 1 10.78.95.25 on instance-1 2022-07-19 16:25:10 [INFO] Attempting to ssh to instance-1(10.78.95.25) 2022-07-19 16:25:10 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:10 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:10 [INFO] Running ping -M do -s 1414 -c 1 10.78.95.25 on instance-1 2022-07-19 16:25:11 [INFO] Attempting to ssh to instance(10.78.95.71) 2022-07-19 16:25:11 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:11 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:11 [INFO] Running ping -c 1 192.168.0.1 on instance 2022-07-19 16:25:11 [INFO] Attempting to ssh to instance(10.78.95.71) 2022-07-19 16:25:11 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:11 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:11 [INFO] Running ping -M do -s 1414 -c 1 192.168.0.1 on instance 2022-07-19 16:25:12 [INFO] Attempting to ssh to instance(10.78.95.25) 2022-07-19 16:25:12 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:12 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:12 [INFO] Running ping -c 1 192.168.0.1 on instance 2022-07-19 16:25:12 [INFO] Attempting to ssh to instance(10.78.95.25) 2022-07-19 16:25:12 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:12 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:12 [INFO] Running ping -M do -s 1414 -c 1 192.168.0.1 on instance 2022-07-19 16:25:13 [INFO] Running resource cleanup 2022-07-19 16:25:13 [INFO] Removing resources created by test (zaza-neutrontests*) 2022-07-19 16:25:21 [INFO] ok 2022-07-19 16:25:21 [INFO] ---------------------------------------------------------------------- 2022-07-19 16:25:21 [INFO] Ran 1 test in 48.934s 2022-07-19 16:25:21 [INFO] OK 2022-07-19 16:25:21 [INFO] Events: Test zaza.openstack.charm_tests.neutron.tests.NeutronNetworkingTest: Start: 1658240672.1115046 Finish: 1658240721.410828 Elapsed Time: 49.29932355880737 PCT Of Run Time: 100 Metadata: {} $ juju run --application nova-compute 'uname -a' - Stdout: | Linux casual-buck 5.15.0-43-generic #46-Ubuntu SMP Tue Jul 12 10:30:17 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux UnitId: nova-compute/0 - Stdout: | Linux neat-serval 5.15.0-43-generic #46-Ubuntu SMP Tue Jul 12 10:30:17 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux UnitId: nova-compute/1 - Stdout: | Linux brave-horse 5.15.0-43-generic #46-Ubuntu SMP Tue Jul 12 10:30:17 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux UnitId: nova-compute/2 ... 2022-07-19 16:25:09 [INFO] XXX HAIRPIN 2022-07-19 16:25:09 [INFO] Attempting to ssh to instance-1(10.78.95.92) 2022-07-19 16:25:09 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:09 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:09 [INFO] Running ping -M do -s 1414 -c 1 10.78.95.92 on instance-1 2022-07-19 16:25:09 [INFO] Attempting to ssh to instance-1(10.78.95.92) 2022-07-19 16:25:09 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:09 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:09 [INFO] Running ping -M do -s 1414 -c 1 10.78.95.92 on instance-1 2022-07-19 16:25:09 [INFO] Attempting to ssh to instance-1(10.78.95.92) 2022-07-19 16:25:10 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:10 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:10 [INFO] Running ping -M do -s 1414 -c 1 10.78.95.92 on instance-1 2022-07-19 16:25:10 [INFO] Attempting to ssh to instance(10.78.95.29) 2022-07-19 16:25:10 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:10 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:10 [INFO] Running ping -c 1 192.168.0.1 on instance 2022-07-19 16:25:11 [INFO] Attempting to ssh to instance(10.78.95.29) 2022-07-19 16:25:11 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:11 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:11 [INFO] Running ping -M do -s 1414 -c 1 192.168.0.1 on instance 2022-07-19 16:25:12 [INFO] Attempting to ssh to instance(10.78.95.92) 2022-07-19 16:25:12 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:12 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:12 [INFO] Running ping -c 1 192.168.0.1 on instance 2022-07-19 16:25:12 [INFO] Attempting to ssh to instance(10.78.95.92) 2022-07-19 16:25:12 [INFO] Connected (version 2.0, client OpenSSH_7.6p1) 2022-07-19 16:25:12 [INFO] Authentication (publickey) successful! 2022-07-19 16:25:12 [INFO] Running ping -M do -s 1414 -c 1 192.168.0.1 on instance 2022-07-19 16:25:13 [INFO] Running resource cleanup 2022-07-19 16:25:13 [INFO] Removing resources created by test (zaza-neutrontests*) 2022-07-19 16:25:21 [INFO] ok 2022-07-19 16:25:21 [INFO] ---------------------------------------------------------------------- 2022-07-19 16:25:21 [INFO] Ran 1 test in 52.369s 2022-07-19 16:25:21 [INFO] OK 2022-07-19 16:25:21 [INFO] Events: Test zaza.openstack.charm_tests.neutron.tests.NeutronNetworkingTest: Start: 1658240668.6095116 Finish: 1658240721.3067656 Elapsed Time: 52.697253942489624 PCT Of Run Time: 100 Metadata: {}