DNS slows down after up too long?

[Claghorn]

I have an asus RT-AC5300 with 380.59 merlin firmware. It was up and running continuously for a few weeks, with mostly no problems, but then I started noticing that on some sites (in particular http://www.npr.org/sections/news/) it would load the text instantly and the images would sometimes take several minutes to follow.

As an experiment, I rebooted the router, and now the images and text both load instantly. I'm wondering if there is a known problem with the dnsmasq version getting tired or something if it is up too long?

Just one data point, so it may be coincidence, but I thought I'd ask.

 

[Claghorn]

As an experiment, I rebooted the router, and now the images and text both load instantly. I'm wondering if there is a known problem with the dnsmasq version getting tired or something if it is up too long?

Or maybe it really is the web site. It has already started happening again after just 1/2 hour or so. I'll have to remember to check it at work tomorrow on a completely different network and see if I see the same thing.

 

[sfx2000]

if there is a known problem with the dnsmasq version getting tired or something if it is up too long?

Default dnsmasq TTL set too long? Normally this is handled upstream, but dnsmasq is a caching DNS server, and the --min-cache-ttl value might be set a bit long...