In message <4e5fb1ab.4040...@data.pl>, Torinthiel writes: > On 09/01/11 17:56, Tom Schmitt wrote: > >=20 > > I found the cause of my problem (and a solution): > >=20 > > dig +trace actually has another behaviour than doing the trace manually= > step by step with dig. > >=20 > >=20 > > For a trace, dig is asking for the NS-records, then for the IP-address = > of the nameserver found and then go on asking this nameserver. Till the d= > estination is reached. > >=20 > > In my case, dig is asking for the nameservers of the root-zone and is g= > etting the answer: > > . IN NS root1 > > . IN NS root2=20 > > etc > >=20 > > Next dig is asking for the A-record of root1. And here is the differren= > ce: > >=20 > > If I do "dig root1" dig is asking exactly this, it is asking for the A-= > record of root1. And of course I get the correct answer from named. > >=20 > > The +trace option does not do this! > > Instead, the +trace-option is using the searchsuffix in the resolv.conf= > and is asking for root1.my.search.suffix. and NOT for root1. > > This is why the +trace option fails every time. > >=20 > > After deleting the searchsuffix in resolv.conf, dig +trace is working f= > ine without any error. > >=20 > > In my oppinion it's a bug that dig +trace behave in a differrent way th= > an doing the queries with dig one by one. > > No, IMHO, it's a bug in your root zone. > Names without dot at end are relative. Change your root zone to say > =2E IN NS root1. > =2E IN NS root2. > > (with dots appended) and you should be home.
"dig +trace" calls getaddrinfo() and that needs to be able to resolve the hostname (without dots at the end). getaddrinfo() is called so that we don't have to have a full blown iterative resolver in dig. The Internet moved from being a flat namespace (names without dots) for hostnames to a heirachical namespace (names with *internal* dots) a 1/4 century ago. http://tools.ietf.org/html/rfc921 Hostnames without dots are now local (e.g. localhost) or need to be qualified (resolv.conf: search). Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ 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
