Odd DNS issue with my home network.
Recently I've been having an odd DNS issue. Lately, and quite often (1-3 times a day) my home network loses its DNS. This happens when using both Comcast's or Google's DNS servers. Doing an ipconfig /flushdns doesn't do anything for machines on the network, and it seems the only thing that fixes it is power-cycling the router. But the weird thing is, the router itself still seems to have DNS functionality, as I can ping a web address through the router's admin portal.
For reference my router is an old Buffalo Airstation, circa 2007-8. I think it's capable of running WW-DRT, but I haven't done anything with its firmware ever.