In message <20130829182253.ga13...@laperouse.bortzmeyer.org>, Stephane Bortzmey er writes: > One of my contacts noticed that you cannot query 42.fr's SOA with > BIND: SERVFAIL. Querying other types, or using Unbound (or Google > Public DNS) instead of BIND works. > > The only thing special he sees is the double SOA: > > % dig SOA 42.fr > > ; <<>> DiG 9.9.2-P1 <<>> SOA 42.fr > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9894 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags: do; udp: 4096 > ;; QUESTION SECTION: > ;42.fr. IN SOA > > ;; ANSWER SECTION: > 42.fr. 2907 IN SOA ns1.42.fr. postmaster.4 > 2.fr. 2013032901 300 300 604800 86400 > 42.fr. 2907 IN SOA ns2.42.fr. postmaster.4 > 2.fr. 2013032901 300 300 604800 86400 > > ;; AUTHORITY SECTION: > 42.fr. 2897 IN NS ns1.42.fr. > 42.fr. 2897 IN NS ns2.42.fr. > > ;; Query time: 0 msec > ;; SERVER: 127.0.0.1#53(127.0.0.1) <----- Unbound > ;; WHEN: Thu Aug 29 20:21:51 2013 > ;; MSG SIZE rcvd: 153 > > I'm not sure of what the RFC say about that... > > _______________________________________________ > 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
Named will reject answers which contain multiple non-identical records at the same name and type that should be singletons. The list of types with that attribute is below. % grep SINGL lib/dns/rdata/*/*.c lib/dns/rdata/generic/cname_5.c: (DNS_RDATATYPEATTR_EXCLUSIVE | DNS_RDATATYPEATTR_SINGLETON) lib/dns/rdata/generic/dname_39.c:#define RRTYPE_DNAME_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON) lib/dns/rdata/generic/opt_41.c:#define RRTYPE_OPT_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON | \ lib/dns/rdata/generic/soa_6.c:#define RRTYPE_SOA_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON) % 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
