kea-dhcp4 not starting due to link flapping possibly caused by Zenarmor starting

[dinguz]

Some time ago, I posted the message below to the 24.1 stable forum. One of the hypothesis is that kea fails to startup properly due to link flapping, caused by Zenarmor binding to the interface at the same time. This issue still exists with 24.7 final. When I disable Zenarmor, all is well.

A few OPNsense releases ago, I migrated from isc-dhcp4 to kea. This mostly works, however there is one nagging issue: Every once in a while, after a reboot, kea appears not to be running. In the logs, the message 'no interface configured to listen to DHCP traffic' is shown. After a manual restart of kea all is well.
The error is not readily visible on the OPNsense dashboard, as kea appears to be running, it just isn't doing anything.
As this doesn't always happen, it seems to be a timing-sensitive issue. Are other people seeing this?

Code: [Select]

2024-07-11T15:35:01 WARN [kea-dhcp4.dhcp4.0x834bcb000] DHCP4_MULTI_THREADING_INFO enabled: yes, number of threads: 2, queue size: 64
2024-07-11T15:35:01 WARN [kea-dhcp4.dhcpsrv.0x834bcb000] DHCPSRV_NO_SOCKETS_OPEN no interface configured to listen to DHCP traffic
2024-07-11T15:35:01 WARN [kea-dhcp4.dhcpsrv.0x834bcb000] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: the interface igb0 is not running
2024-07-11T15:35:01 WARN [kea-dhcp4.dhcp4.0x834bcb000] DHCP4_RESERVATIONS_LOOKUP_FIRST_ENABLED Multi-threading is enabled and host reservations lookup is always performed first.
2024-07-11T15:35:01 WARN [kea-dhcp4.dhcpsrv.0x834bcb000] DHCPSRV_MT_DISABLED_QUEUE_CONTROL disabling dhcp queue control when multi-threading is enabled.
2024-07-11T15:34:57 WARN [kea-dhcp4.dhcp4.0x834bcb000] DHCP4_MULTI_THREADING_INFO enabled: yes, number of threads: 2, queue size: 64
2024-07-11T15:34:57 WARN [kea-dhcp4.dhcp4.0x834bcb000] DHCP4_RESERVATIONS_LOOKUP_FIRST_ENABLED Multi-threading is enabled and host reservations lookup is always performed first.
2024-07-11T15:34:57 WARN [kea-dhcp4.dhcpsrv.0x834bcb000] DHCPSRV_MT_DISABLED_QUEUE_CONTROL disabling dhcp queue control when multi-threading is enabled.


[sy]

Hi,

What about when Zenarmor in bypass mode?