Comment 2 for bug 1953639

I've downloaded the following crashdump:
https://oil-jenkins.canonical.com/artifacts/9eae3037-69df-4413-801a-4c2e077f5c72/generated/generated/openstack/juju-crashdump-openstack-2022-02-11-03.06.01.tar.gz

And confirmed that octavia.amphorae.drivers.health.heartbeat_udp is using 127.0.0.1 (the default value if no config) instead of IPv6 address of o-hm0 prot.

I cannot be 100% sure since I couldn't find /etc/octavia/octavia.conf in the crashdump but this is likely the same with:
https://bugs.launchpad.net/charm-octavia/+bug/1961088

juju-crashdump-openstack-2022-02-11-03.06.01/4d84b389-7b51-4614-af77-a3150cd9ebe4$ tail -n5 octavia_*/var/log/octavia/octavia-health-manager.log
==> octavia_0/var/log/octavia/octavia-health-manager.log <==
2022-02-11 01:30:11.255 197854 INFO octavia.common.config [-] Logging enabled!
2022-02-11 01:30:11.255 197854 INFO octavia.common.config [-] /usr/bin/octavia-health-manager version 6.2.1
2022-02-11 01:30:11.384 197854 INFO octavia.cmd.health_manager [-] Health Manager listener process starts:
2022-02-11 01:30:11.387 197854 INFO octavia.cmd.health_manager [-] Health manager check process starts:
2022-02-11 01:30:11.389 197880 INFO octavia.amphorae.drivers.health.heartbeat_udp [-] attempting to listen on 127.0.0.1 port 5555

==> octavia_1/var/log/octavia/octavia-health-manager.log <==
2022-02-11 01:29:18.431 157382 INFO octavia.common.config [-] Logging enabled!
2022-02-11 01:29:18.432 157382 INFO octavia.common.config [-] /usr/bin/octavia-health-manager version 6.2.1
2022-02-11 01:29:18.557 157382 INFO octavia.cmd.health_manager [-] Health Manager listener process starts:
2022-02-11 01:29:18.560 157382 INFO octavia.cmd.health_manager [-] Health manager check process starts:
2022-02-11 01:29:18.561 157401 INFO octavia.amphorae.drivers.health.heartbeat_udp [-] attempting to listen on 127.0.0.1 port 5555

==> octavia_2/var/log/octavia/octavia-health-manager.log <==
2022-02-11 01:30:05.961 161287 INFO octavia.common.config [-] Logging enabled!
2022-02-11 01:30:05.961 161287 INFO octavia.common.config [-] /usr/bin/octavia-health-manager version 6.2.1
2022-02-11 01:30:06.094 161287 INFO octavia.cmd.health_manager [-] Health Manager listener process starts:
2022-02-11 01:30:06.096 161287 INFO octavia.cmd.health_manager [-] Health manager check process starts:
2022-02-11 01:30:06.099 161309 INFO octavia.amphorae.drivers.health.heartbeat_udp [-] attempting to listen on 127.0.0.1 port 5555