On Oct 15, 2012, at 3:45 AM, pangj <pa...@riseup.net> wrote: > δΊ 2012-10-15 15:38, Cathy Almond ει: >> On 15/10/12 05:23, pangj wrote: >>> Hello, >>> >>> I have setup a wild record for cloudns.tk, the record: >>> >>> *.cloudns.tk. 300 IN A 209.141.54.207 >>> >>> And I added another A record as this: >>> >>> s1.test.cloudns.tk. 300 IN A 8.8.8.8 >>> >>> After adding this record, the record of test.cloudns.tk gets lost, it >>> does't match the wild record anymore. >>> >>> "dig test.cloudns.tk" gets nothing. >>> >>> Can you help explain it? thanks in advance. >> >> It's subtle. >> >> Wildcards match where there are no labels already. >> >> By adding record s1.test.cloudns.tk, you're implicitly creating domain >> test.cloudns.tk. It's empty, but it exists. >> > > But I didn't define a zone "test.cloudns.tk" (neither NS nor soa defined for > it), why this domain exists?
You created s1.test.cloudns.tk -- when you did this, you "automatically" created test.cloudns.tk (if you had created a.b.c.d.e.cloudns.tk you would also have created e.cloudns.tk, d.e.couldns.tk, c.d.e.cloudns.tk, b.c.d.e.cloudns.tk). The DNS is basically a tree structure -- in order to have a leaf s1.test.cloudns.tk, there needs to be a "branch" (test.cloudns.tk) for it to hang on. By adding the s1.test.cloudns.tk leaf you also make the branch exist. There *is* in fact an SOA for test.cloud.tk: dig SOA +nocomment +nostats test.cloudns.tk ; <<>> DiG 9.9.2 <<>> SOA +nocomment +nostats test.cloudns.tk ;; global options: +cmd ;test.cloudns.tk. IN SOA cloudns.tk. 226 IN SOA ns0.cloudwebdns.com. support.cloudwebdns.com. 1048 7200 1800 604800 300 It is the SOA for clouds.tk. W > > Thanks Cathy. > > _______________________________________________ > 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 -- The duke had a mind that ticked like a clock and, like a clock, it regularly went cuckoo. -- (Terry Pratchett, Wyrd Sisters) _______________________________________________ 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
