I'm trying to ping one of the 8 WAN1 external IPs from within the LAN but it times out. I can ping WAN2 IPs but not WAN1.

WAN1: 94.193.84.x
WAN2: 94.193.80.x

Any ideas? I'm running firmware 3.3.3_232201_A.

Thanks in advance.

Found the problem. Looks like it's a firmware issue. If I disable WAN2 and reboot, I can then ping WAN1 external IPs from within the LAN. Re-enable WAN2 and reboot, and I can only ping WAN2 external IPs.

There's a note in the 3.3.5.1 release notes:

"Corrected: When WAN1 and WAN2 are in the same subnet, NAT loopback will fail"

For me, WAN1 and WAN2 are in the same subnet, but upgrading to 3.3.5.1 doesn't resolve my issue.

DrayTek have confirmed this is a bug, that was meant to be fixed in 3.3.5.1. They cannot confirm when the issue will be fixed either.

More great buggy software from DrayTek!