bind9 resolver a simple cache only with root hint. no local zones. On Tue, Nov 13, 2018 at 9:18 AM Lyle Giese <l...@lcrcomputer.net> wrote:
> On 11/13/2018 11:04 AM, Frank Liu wrote: > > Hi, > > Is there a RFC determining which nameserver to use if there is a > conflicting subdomain delegation? > > eg: > In the zone of a.com, there are two NS delegations: > > b.a.com NS host1 > c.b.a.com NS host2 > > On host1 in zone b.a.com, there is > c.b.a.com NS host3 > > As you can see, there is a conflicting delegation for c.b.a.com. If I > look a name d.c.b.a.com, will the nameserver host2 or host3 be used? > dig +trace seems to go to host2, but bind9 as a resolver goes to host3. > (the test was done on a centos7). > > Any ideas? > Thanks! > > > _______________________________________________ > Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe > from this list > > bind-users mailing > listbind-us...@lists.isc.orghttps://lists.isc.org/mailman/listinfo/bind-users > > I would expect that behavior if the Bind9 resolver was setup to query > host1. If bind9 queries a server that is authoritive for b.a.com, I > would expect that result. If the bind9 resolver is setup to query a > recursive only server(other than host1), I would expect the same behavior > as the +trace result. > > so I think the answer is dependant on how your bind9 resolver is > configured. > > Lyle Giese > _______________________________________________ > 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 >
_______________________________________________ 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
