So I just bought a D-link DIR-655. It's a B1 hardware with the 2.00NA firmware. After a few hours the DNS server in the DIR-655 stops responding. This happens on all of the PCs connected to it (both wired and wireless) who have their DNS server set to 192.168.1.1. The only way I've found to recover is to reboot the router, change something in router's the configuration causing the router to re-initialize, or to ping an external site from the ping test console. When this happens the external ISP DNS server are still working (confirmed by NSlookup testing manually setting them).
nslookup when DIR-655's DNS server goes off in the weeds:
> yahoo.com
Server: UnKnown
Address: 192.168.1.1
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out
nslookup using ISP's DNS when DIR-655's DNS server is off in the weeds:
> yahoo.com 209.18.47.61
Server: [209.18.47.61]
Address: 209.18.47.61
Non-authoritative answer:
Name: yahoo.com
Addresses: 67.195.160.76, 69.147.125.65, 72.30.2.43, 98.137.149.56
209.191.122.70
nslookup when DIR-655's DNS server is working:
> yahoo.com
Server: UnKnown
Address: 192.168.1.1
Non-authoritative answer:
Name: yahoo.com
Addresses: 72.30.2.43, 69.147.125.65, 67.195.160.76, 209.191.122.70
98.137.149.56
I did some googling / searching and didn't seem to find other people have this specific DNS problem. Advanced DNS is off. Did I just get a bad DIR-655, or is this typical behavior?