<![CDATA[Tunnel mode Responder only not responding]]>Followed the documentation exactly as described here, including timers and everything else.
https://docs.netgate.com/pfsense/en/latest/recipes/ipsec-s2s-psk.html

SIDE A of the tunnel:
Responder only
Close connection and clear SA

SIDE B of the tunnel:
Default
Restart/reconnect

I tested with and without the Keep Alive option in the first p2 entry at the SIDE B.

SIDE B keeps with status, connecting.
SIDE A shows Connect P1 and P2

The tunnel only establishes if I go to side A and click, Connect P1 and P2.

Edit:
Forgot to mention that SIDE A has another tunnels working in Responder only/Restart reconnect, but the remote peers are Mikrotiks.
So, this is happening only from pfsense to pfsense.

]]>https://forum.netgate.com/topic/188017/tunnel-mode-responder-only-not-respondingRSS for NodeSat, 07 Mar 2026 20:39:20 GMTTue, 07 May 2024 15:34:30 GMT60<![CDATA[Reply to Tunnel mode Responder only not responding on Wed, 08 May 2024 01:28:02 GMT]]>Fixed by inverting the roles, I suppose it was something with NAT-T, UDP port 500 unreachable.

]]>https://forum.netgate.com/post/1167849https://forum.netgate.com/post/1167849Wed, 08 May 2024 01:28:02 GMT