(XT8) router.asus.com unreachable when router is offline

[akli]

When offline (modem has lost the internet connection) my asus router (xt8) is inaccessible via router.asus.com but still reachable via ip address (192.168.50.1). When this happens the router's web server becomes unusable and I can't even access my modem (192.168.7.1).

When online:
ping router.asus.com => OK
ping 192.168.50.1 => OK
ping 192.168.7.1 (modem) => OK

When offline (unplug modem's dsl cable)
ping router.asus.com => KO
ping 192.168.50.1 => OK
ping 192.168.7.1 => KO

I switched from a google mesh to an asus mesh in order to have full control of my router and network even when I'm offline (third country location, internet is unstable), it really becomes a pain when trying to diagnose.

How could I solve this?

Thanks in advance.

 

[ColinTaylor]

Try going to Administration - System and setting "Enable WAN down browser redirect notice" to No.

 

[akli]

@ColinTaylor​

God bless you! it works like a charm.