PeterUK  Guru Member

so if you put in a test IP where the ping will fail like 127.0.0.2 this will fail the check for testing. So what is it your seeing? LAN2 when ping is fine not going out WAN2?

Maybe I'm missing something? So with ping check working the following happens LAN1 goes out WAN1 LAN2 goes out WAN2 ping check fails on WAN1 LAN1 goes out WAN2 LAN2 goes out WAN2 ping check fails on WAN2 LAN1 goes out WAN1 LAN2 goes out WAN1

It should work what you have done...if you unplug WAN2 LAN2 should use WAN1 Maybe change one of the ping to 8.8.4.4 There is this firmware saying about a fix for fail over https://community.zyxel.com/en/discussion/18656/zld-v5-37wk30-firmware-release#latest

@Zyxel_James I think the problem is incoming DNS requests are being answered by ATP200 nothing to do with OpenDNS more the ATP200 is a open resolver. Do you have any security service on firewall rules and from WAN to WAN? You can disable/enable rules and test here to find the rule doing this https://www.openresolver.com/

Yes disable WAN1 Connectivity Check due to a bug you may need to disable and enable Connectivity Check for routing It is likely your hub/modem on disconnect from coaxial wants you to do DHCP again which the USG will not do this is why a feature to put in ideas for the routing rule when ping fails for the WAN1 to do DHCP…

Disable the Connectivity Check in interface and disable/enable Connectivity Check for routing only. So do you get a new different IP when you reconnect? Looks like you do why I said about feature you want to put in ideas about DHCP recheck on ping fail which will likely not happen with you model USG due to EOL.

but does port 80 to 80 work? could uplink wan1 be wrong for dsl line?

So…if you do NAT 80 to 80 it works but not NAT 7980 to 80?

They have L2TP/IPSEC working for remote devices so all they need is the site to site. Here is a run through VPN gateway IKEv2 interface WAN1 peer gateway You need to know which end or both to be nailed up Static Address (can use domain name) to connect to the other end or Dynamic Address for the other end to connect to…

Hmm…what happens if you unplug WAN1 by the USG and plugging it a back in? My theory is unplugging the coaxial means WAN1 stays up and when you connect the coaxial back your ISP wants you to do a DHCP and maybe a new IP? So a feature you want to put in ideas is when ping fails the USG does DHCP till the connection comes back

Yes that should be possible.