[c-nsp] New feature, can't find it documented - NTP using DNS

[Justin Shore]

Oliver Boehmer (oboehmer) wrote:
> I think the config doesn't honor TTL, so the implementation is rather
> "basic"..

Would that be basic as in it only resolves the FQDN once when the config 
is entered, once per boot, or possibly on a schedule later on in the 
lifecycle of the router?

I noticed other changes between 24T1 and 24T2 that bit me this weekend 
when I upgraded 2 routers that are my NTP servers.  First off all the 
NTP config that was moved way up in the config in an earlier release 
suddenly got moved back to where it was.  Not a big deal but it makes 
RANCID unhappy.  Second, and this is a bad problem, it removed my "ntp 
source <int>" command from the config.  I didn't notice until today that 
my NTP servers weren't syncing up right.  Reviewing the RANCID diff 
pointed out the problem.

This happened on both of the routers that I upgraded from 24T1 to 24T2. 
  I haven't rebooted either router to see if the problem will happen 
after every 24T2 reboot or if it's tied to the moving around of the 
config between 24T1 and 24T2.  My guess would be the latter, at least I 
hope that's the case.  I've contacted TAC to report this bug.

Justin