On Tue, Feb 14, 2012 at 5:59 AM, goran kent <gorank...@gmail.com> wrote: > Hi, > > I need to setup an A record for a machine who's IP might change > unexpectedly, and I need to ensure PCs out there cache it for as short > a time as possible: > > host1 300 IN A 10.10.10.10 > > Does anyone know whether MS windows PCs will in fact honour that 300s, > then force a re-lookup? Can I use even shorter values? eg, 60? > > I know this will lead to extra DNS traffic, but this is only for this > particular case. > > Thanks for any comments. > > Regards > gk > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users
I don't think you'll have a problem with clients not respecting TTL's. Some ISP's resolvers might have a minimum TTL, but 300 seconds isn't all that low. You might run into issues with some service providers if you're trying to do something like a 5 second TTL. Oliver _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
