DhCP and VPN Tunnel
I have 2 sites with Pfsense boxes as gateways.
LAN1 –- PFSense1 --- Internet --- PFSense2 --- LAN2
______ VPN ________/
LAN1 has a few hundred VoIP phones.
They are trying to DHCP against PFSense1
On LAN2 I have a VoIP gateway with a DHCP server.
I have DHCRelay relaying DHCP requests to the DHCP server on LAN2 across the VPN tunnel. It WAS working. Without any odd routes set on PFSense1.
It stopped yesterday.
What I noticed when it stopped was that the stated for the DHCP traffic are no longer appearing in the state table of PFSense2.
I have read the articles in the forum on this. They recommended a static route on PFSense1. I have added that and now I see the states onPFSense2 showing the traffic transiting both interfaces to get to the DHCP server on LAN2. But I do not see any reply. and the DHCP server logs do not show the traffic ever arriving. This LAN is off site and would take a good deal of effort and time to get any type of packet capture from.
I am collecting TCPdump DHCP traffic from the interfaces later this morning.. so that may shed light.
Does anyone see anything I am missing?