On 07.09 08:49, Andreas S. Kerber wrote:

uuh, I guess that would get pretty close to 512 bytes when querying ie.

So what? See below for examples of what could happen: soem glue is omitted. If the client supports IPv6 it almost certainly supports EDNS(0), so the 512 byte limit is no issue. If the lient does not support EDNS some glue may be dropped for very long names without problems. See http://www.nlnetlabs.nl/ipv6/publications/v6rootglue.pdf for a little more detail. (It can be argued that dropping AAAA glue first is a good tactic here because "see above". This will be implemented on all root name servers in the near future.) Daniel ----- ; <<>> DiG 8.2 <<>> @k.root-servers.net. short.ie. ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 10, ADDITIONAL: 12 ;; QUERY SECTION: ;; short.ie, type = A, class = IN ;; AUTHORITY SECTION: ie. 2D IN NS ns2.nic.fr. ie. 2D IN NS ns.ripe.net. ie. 2D IN NS banba.domainregistry.ie. ie. 2D IN NS uucp-gw-1.pa.dec.com. ie. 2D IN NS uucp-gw-2.pa.dec.com. ie. 2D IN NS ns3.ns.esat.net. ie. 2D IN NS gns1.domainregistry.ie. ie. 2D IN NS gns2.domainregistry.ie. ie. 2D IN NS ice.netsource.ie. ie. 2D IN NS ns6.iedr.ie. ;; ADDITIONAL SECTION: ns2.nic.fr. 2D IN A 192.93.0.4 ns.ripe.net. 2D IN A 193.0.0.193 banba.domainregistry.ie. 2D IN A 193.1.142.2 uucp-gw-1.pa.dec.com. 2D IN A 204.123.2.18 uucp-gw-2.pa.dec.com. 2D IN A 204.123.2.19 ns3.ns.esat.net. 2D IN A 192.111.39.100 ns3.ns.esat.net. 2D IN AAAA 2001:7c8:2:a::64 gns1.domainregistry.ie. 2D IN A 198.133.199.102 gns2.domainregistry.ie. 2D IN A 198.133.199.103 ice.netsource.ie. 2D IN A 212.17.32.2 ns6.iedr.ie. 2D IN A 213.190.149.221 ns6.iedr.ie. 2D IN AAAA 2001:bb0:ccc3::2 ;; Total query time: 71 msec ;; FROM: dienst.karrenberg.net to SERVER: k.root-servers.net. 193.0.14.129 ;; WHEN: Tue Sep 7 11:29:37 2004 ;; MSG SIZE sent: 26 rcvd: 499 ; <<>> DiG 8.2 <<>> @k.root-servers.net. something.verylogindeed.fordemopurposes.ie ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 10, ADDITIONAL: 11 ;; QUERY SECTION: ;; something.verylogindeed.fordemopurposes.ie, type = A, class = IN ;; AUTHORITY SECTION: ie. 2D IN NS ns2.nic.fr. ie. 2D IN NS ns.ripe.net. ie. 2D IN NS banba.domainregistry.ie. ie. 2D IN NS uucp-gw-1.pa.dec.com. ie. 2D IN NS uucp-gw-2.pa.dec.com. ie. 2D IN NS ns3.ns.esat.net. ie. 2D IN NS gns1.domainregistry.ie. ie. 2D IN NS gns2.domainregistry.ie. ie. 2D IN NS ice.netsource.ie. ie. 2D IN NS ns6.iedr.ie. ;; ADDITIONAL SECTION: ns2.nic.fr. 2D IN A 192.93.0.4 ns.ripe.net. 2D IN A 193.0.0.193 banba.domainregistry.ie. 2D IN A 193.1.142.2 uucp-gw-1.pa.dec.com. 2D IN A 204.123.2.18 uucp-gw-2.pa.dec.com. 2D IN A 204.123.2.19 ns3.ns.esat.net. 2D IN A 192.111.39.100 ns3.ns.esat.net. 2D IN AAAA 2001:7c8:2:a::64 gns1.domainregistry.ie. 2D IN A 198.133.199.102 gns2.domainregistry.ie. 2D IN A 198.133.199.103 ice.netsource.ie. 2D IN A 212.17.32.2 ns6.iedr.ie. 2D IN A 213.190.149.221 ;; Total query time: 69 msec ;; FROM: dienst.karrenberg.net to SERVER: k.root-servers.net. 193.0.14.129 ;; WHEN: Tue Sep 7 11:29:43 2004 ;; MSG SIZE sent: 60 rcvd: 505 ; <<>> DiG 8.2 <<>> @k.root-servers.net. something.verylogindeed.fordemopurposes.evenlonger.toforceommittingmoreglue.ie ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 10, ADDITIONAL: 9 ;; QUERY SECTION: ;; something.verylogindeed.fordemopurposes.evenlonger.toforceommittingmoreglue.ie, type = A, class = IN ;; AUTHORITY SECTION: ie. 2D IN NS ns2.nic.fr. ie. 2D IN NS ns.ripe.net. ie. 2D IN NS banba.domainregistry.ie. ie. 2D IN NS uucp-gw-1.pa.dec.com. ie. 2D IN NS uucp-gw-2.pa.dec.com. ie. 2D IN NS ns3.ns.esat.net. ie. 2D IN NS gns1.domainregistry.ie. ie. 2D IN NS gns2.domainregistry.ie. ie. 2D IN NS ice.netsource.ie. ie. 2D IN NS ns6.iedr.ie. ;; ADDITIONAL SECTION: ns2.nic.fr. 2D IN A 192.93.0.4 ns.ripe.net. 2D IN A 193.0.0.193 banba.domainregistry.ie. 2D IN A 193.1.142.2 uucp-gw-1.pa.dec.com. 2D IN A 204.123.2.18 uucp-gw-2.pa.dec.com. 2D IN A 204.123.2.19 ns3.ns.esat.net. 2D IN A 192.111.39.100 ns3.ns.esat.net. 2D IN AAAA 2001:7c8:2:a::64 gns1.domainregistry.ie. 2D IN A 198.133.199.102 gns2.domainregistry.ie. 2D IN A 198.133.199.103 ;; Total query time: 67 msec ;; FROM: dienst.karrenberg.net to SERVER: k.root-servers.net. 193.0.14.129 ;; WHEN: Tue Sep 7 11:33:53 2004 ;; MSG SIZE sent: 96 rcvd: 509