Netwatch not working on RB2011UiAS-2HnD !!!

Tested with: RB2011UiAS on v7.9. Netwatch is running fine (after the 5 min delay)

Almost the same setup here. An Edgerouter (with public IP) and a RB2011 for wireguard behind it on inside LAN. This is for testing and not in production. Port forwarding from Edgerouter to the RB2011. This for remote support (mobile devices). LAN can be reached on both IPv4 and IPv6 without any prob...