Package: dnsmasq
Version: 1.23
Severity: important

Hi,

the version of dnsmasq I use on my router is 1.23.  I think positive
results for anything *.dyndns.org, *.no-ip.com and other such dynDNS
service providers are kept for too long.  IMHO they should not be cached
at all or maybe only for a minute or so.

In the last couple of days I frequently had to restart dnsmasq to reach
a computer accessible via dyndns.org because even one hour after the IP
update dnsmasq still returned the old IP.  DNS servers at dyndns.org had
long since been updated and after the restart of dnsmasq, which I assume
flushes the cache, everything worked just fine.

Maybe it would be a good idea to have this configurable just like 
bogus-nxdomain so the user can add from the myriad of providers out 
there after the release of dnsmasq.

I do not know too much about DNS but isn't there a setting for TTL? Does 
dnsmasq honor that and is it really dyndns.org who is the culprit for 
having set that value too high?

Best regards

Rolf Leggewie


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