Can't access admin page for C7800

[brownbreadfox]

I can only access the admin page (192.168.0.1) after I reboot the router.

How do I access the admin page without rebooting the router?

[plemans]

have you tried going to 192.168.100.1

[brownbreadfox]

Yea I've tried 192.168.0.1, 192.168.0.1.1, and 192.168.100.1

The address that consistently works after reboot is 192.168.0.1 and it is also indicated as the "router" in the network preferences.

[plemans]

Have you tried a simple factory reset and reinstall?

[brownbreadfox]

Yes, I've tried the factory reset and re-registering with the ISP  (the ISP controls the firmware so can't do a proper reinstall)

[plemans]

everything else works? 

have you tried other browsers or pc/laptops?

what error do you get?

[brownbreadfox]

I've attached an example of the type of error from the IPv6 test. So right now IPv4 sites don't work.

I've tried Chrome, Safari, and Firefox. I've tried on 2 laptops and 2 iPhones.

[plemans]

Not sure why you think the ipv4/6 is causing you to think this is why you can't access it. 

What error do you get when you try to access the admin portal?

[brownbreadfox]

Ah sorry. I was responding to the wrong ticket.

I've attached the error I get.

[plemans]

And you've tried a different pc?

Are you hardwired into the C7800?

You tried the 192.168.100.1 when hardwired in? 

And tried different browsers?

[brownbreadfox]

Yes, I've tried on 2 laptops.

I just tried 192.168.100.1 on Firefox and Chrome via ethernet connection directly to the router.  Same result.

[plemans]

Can you ping it? 

Is there anything else connected to the router? 

Like a managed switch, another router, access point, etc. 

Just connect the 1 device after the reset. 

[brownbreadfox]

Here's the ping log:

ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1): 56 data bytes
64 bytes from 192.168.0.1: icmp_seq=0 ttl=64 time=4.752 ms
64 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=4.589 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=64 time=5.477 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=64 time=3.989 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=64 time=4.527 ms
64 bytes from 192.168.0.1: icmp_seq=5 ttl=64 time=5.114 ms
64 bytes from 192.168.0.1: icmp_seq=6 ttl=64 time=4.748 ms
64 bytes from 192.168.0.1: icmp_seq=7 ttl=64 time=4.414 ms
64 bytes from 192.168.0.1: icmp_seq=8 ttl=64 time=4.799 ms
64 bytes from 192.168.0.1: icmp_seq=9 ttl=64 time=4.732 ms
64 bytes from 192.168.0.1: icmp_seq=10 ttl=64 time=5.610 ms
64 bytes from 192.168.0.1: icmp_seq=11 ttl=64 time=4.715 ms

No switches, routers, or AP.

I'll try restarting with only 1 device now.