On Tue, Mar 04, 2014 at 05:32:09PM +1100, Mark Andrews <ma...@isc.org> wrote a message of 24 lines which said:
> *Glue records are not optional in a referral.* Why? A resolver can always reissue A and AAAA requests after receiving NS RRsets without glue. This increase latency but it will work. But there is more: in a referral, sending *all* the glue records *is* optional. % dig +bufsize=512 @f.root-servers.net A www.internautique.fr ; <<>> DiG 9.9.3-rpz2+rl.13214.22-P2-Ubuntu-1:9.9.3.dfsg.P2-4ubuntu1.1 <<>> +bufsize=512 @f.root-servers.net A www.internautique.fr ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29492 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 8, ADDITIONAL: 7 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 4096 ;; QUESTION SECTION: ;www.internautique.fr. IN A ;; AUTHORITY SECTION: fr. 172800 IN NS f.ext.nic.fr. fr. 172800 IN NS d.nic.fr. fr. 172800 IN NS d.ext.nic.fr. fr. 172800 IN NS e.ext.nic.fr. fr. 172800 IN NS g.ext.nic.fr. fr. 86400 IN DS 20122 8 2 ( A4208B55FFB352EDC816D9329283DD8BBDDE44C58539 5AF9AA7275ABE3CF6795 ) fr. 86400 IN DS 35095 8 2 ( 23C6CAADC9927EE98061F2B52C9B8DA6B53F3F648F81 4A4A86A0FAF9843E2C4E ) fr. 86400 IN RRSIG DS 8 1 86400 ( 20140312000000 20140304230000 33655 . PG6KEeoGIzsI1KnwWLFCjbmfy9Gvc8EyOlHaAR/vBMD9 kGKZW68OczNt95JwpA0xTRBBH+4wdxNZhrIiScJ4vT/A mjrwt2sV1SPFl1+gdX0yynYVwFd+5aVhOsZO7Djo/KzZ 3HmHxttWjZGnQDbok5sUNuPwcKu2zENiwDsIS9M= ) ;; ADDITIONAL SECTION: d.ext.nic.fr. 172800 IN A 192.5.4.2 d.nic.fr. 172800 IN A 194.0.9.1 e.ext.nic.fr. 172800 IN A 193.176.144.22 f.ext.nic.fr. 172800 IN A 194.146.106.46 g.ext.nic.fr. 172800 IN A 194.0.36.1 d.ext.nic.fr. 172800 IN AAAA 2001:500:2e::2 ;; Query time: 180 msec ;; SERVER: 2001:500:2f::f#53(2001:500:2f::f) ;; WHEN: Wed Mar 05 14:46:51 GMT 2014 ;; MSG SIZE rcvd: 500 Note all the glue records were sent and, yet, BIND did not set TC=1. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop