Octavia loadbalancer are staying in OFFLINE

We have discovered that after some times the health-manager is not updating the operating-status of the loadbalancer.

We are running Octavia in Zed with Python 3.10 and a venv with those python library :
https://paste.opendev.org/show/bqGsJUSKaJeKxp6evvoS/

After a while, we won't see any logs like :
2023-08-22 17:02:40.672 6 DEBUG octavia.amphorae.drivers.health.heartbeat_udp [-] Received packet from ('X.X.X.X', 61403) dorecv /var/lib/openstack/lib/python3.10/site-packages/octavia/amphorae/drivers/health/heartbeat_udp.py:95

and when we do a GMR on the process 6 we have :
https://paste.opendev.org/show/bty8vb4FxzAHqA6wDXH7/

/var/lib/openstack/lib/python3.10/site-packages/octavia/amphorae/drivers/health/heartbeat_udp.py:95 in dorecv
    `LOG.debug('Received packet from %s', srcaddr)`

/usr/lib/python3.10/logging/__init__.py:1835 in debug
    `self.log(DEBUG, msg, *args, **kwargs)`

/usr/lib/python3.10/logging/__init__.py:1879 in log
    `self.logger.log(level, msg, *args, **kwargs)`

/usr/lib/python3.10/logging/__init__.py:1547 in log
    `self._log(level, msg, args, **kwargs)`

/usr/lib/python3.10/logging/__init__.py:1624 in _log
    `self.handle(record)`

/usr/lib/python3.10/logging/__init__.py:1634 in handle
    `self.callHandlers(record)`

/usr/lib/python3.10/logging/__init__.py:1696 in callHandlers
    `hdlr.handle(record)`

/usr/lib/python3.10/logging/__init__.py:966 in handle
    `self.acquire()`

/usr/lib/python3.10/logging/__init__.py:917 in acquire
    `self.lock.acquire()`

/var/lib/openstack/lib/python3.10/site-packages/oslo_log/pipe_mutex.py:95 in acquire
    `eventlet.hubs.trampoline(self.rfd, read=True)`

/var/lib/openstack/lib/python3.10/site-packages/eventlet/hubs/__init__.py:159 in trampoline
    `return hub.switch()`

/var/lib/openstack/lib/python3.10/site-packages/eventlet/hubs/hub.py:313 in switch
    `return self.greenlet.switch()`

But i don't think the health-manager is using eventlet
([O345] Usage of Python eventlet module not allowed --> https://github.com/openstack/octavia/blob/stable/zed/HACKING.rst)

And we are using oslo.log in 5.0.2 which include this patch : https://github.com/openstack/oslo.log/commit/94b9dc32ec1f52a582adbd97fe2847f7c87d6c17

The conf we use :
https://paste.opendev.org/show/b6n2SRVG8VvAvNsKX3Rd/

If you have any idea don't hesitate