Tunnel 2 works, but Tunnel 1 stopped working 2 days ago
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I have 3 sites; let's call them Office (192.168.0.0/24), Home1 (192.168.1.0/24), and Home2 (192.168.2.0/24). They are fully meshed via pfsense 2.4.4/IPSec IKEv2 tunnels connecting:
Office<-->Home1
Office<-->Home2
Home1<-->Home2.This was all working until 3 days ago when Office<-->Home1 suddenly stopped passing traffic.
The pfsense appliances at both Office and at Home1 report that the tunnel is up, but I can't get any machine from inside Home1 to see/ping any machine inside Office, including the pfsense router at 192.168.0.1, and I can't get machines inside Office to see/ping any machine inside Home1, including the pfsense router at 192.168.1.1.
Devices in Home1 can see devices in Home2, and devices in Home2 can see devices in Office.
I have made no changes to the configurations of any of the pfsense appliances or the tunnels, and I have restarted the pfsense appliances at both Office and at Home1 multiple times. Each time, the Office<-->Home1 tunnel establishes right away, but I still can't get any traffic to go between them.
The IPSec Rules on both the Office and Home1 routers are set to Pass all IPV4 traffic, and this must be working correctly otherwise Office<-->Home2 and Home1<-->Home2 wouldn't work.
Are there any other ways to troubleshoot this? Or should I just delete the tunnels and re-create them?