I have a virtual pfsense in the datacenter and a mikrotik at home. I have a openvpn site to site between the to routers. Sinds unknown days the openvpn stopped working. I did an upgrade on the mikrotik a few days ago. Maybe this broke it. I don’t know what version I was using previously.
I get an error at the pfsense logging saying. mikrotik/{WanIpMikrotik}:51290 ip packet with unkown ip version=0 seen
The setup:
Pfsense in datacenter
- public wan ip.
- Lan 10.105.0.0/24
- openvpn: 192.168.70.1
Mikrotik at home:
- public wan ip.
- lan 192.168.60.0/24
- openvpn: 192.168.70.2
Ping works from public wan mikrotik to openvpn gateway(192.168.70.1). If I ping the openvpn gateway with source ip 192.168.60.1 the ping fails. Pinging 192.168.60.1 from the pfsense also fails.
I have access to the router (from isp) in between the two routers. If I ping the openvpn gateway with source ip 192.168.60.1 I see traffic over the isp router. pinging the other way around I see no traffic in the isp router.
So it looks like the pfsense doesn’t know how to reach 192.168.60.1. In the openvpn on the pfsense 192.168.60.0/24 is defined as the remote network.
What troubleshooting steps can I take to further figure out what the problem is?