After adding a few log lines we sadly found the issue to just be the merged patches to be missing in the UCA package neutron-vpnaas. I opened bug / SRU: https://bugs.launchpad.net/cloud-archive/+bug/1995861
Looking deeper into the code we also found the reason for the duplicate IPtables. I shall be pushing a patchset for those soon.
After adding a few log lines we sadly found the issue to just be the merged patches to be missing in the UCA package neutron-vpnaas. I opened bug / SRU: https:/ /bugs.launchpad .net/cloud- archive/ +bug/1995861
Looking deeper into the code we also found the reason for the duplicate IPtables. I shall be pushing a patchset for those soon.