I am trying to monitor a remote device which is at the end of an IPSEC tunnel.

This has been setup as follows: Subnet A (192.168.0.0/24) <-> Subnet B (172.16.0.0/24)

This is causing pings to fail because when they originate from the router itself they have our public IP instead of an address in subnet A. We can ping from the router using ping with a source IP setup in Subnet A without issue.

While this is fine from the router there does not seem to be a way to ping with a source IP in the dude and I wondered if there was a way to do this with a custom function?