[ipv6-wg@ripe.net] Re: [dns-wg] IPv6 in .ie
Andreas S. Kerber wrote:
On Tue, Sep 07, 2004 at 08:39:08AM +0200, Jeroen Massar wrote:
I also see that you have ns2.nic.fr listed in there, ns3.nic.fr has IPv6 for sure. You should maybe ask RIPE NCC if they can stick glue for ns.ripe.net into the . also with an IPv6 address, which would also give quite a number of other TLD's etc an IPv6 capable nameserver all of a sudden.
uuh, I guess that would get pretty close to 512 bytes when querying ie.
# dig -t NS ie. @a.root-servers.net | grep MSG ;; MSG SIZE rcvd: 493
I think adding another AAAA record will actually exceed this limit. Daniel wrote:
So what? See below for examples of what could happen: soem glue is omitted.
But also the IANA procedure will not permit it: "5. If the number of name servers or IP addresses in the delegation exceeds eight (8), the size of responses to reasonable queries with the intended delegation will be checked to ensure that such responses fit into a 512 byte UDP packet. This is the standard size limitation for UDP response packets for most resolving name server software on the Internet today." Coming back to the issue with ns.ripe.net. The fact that it is a secondary for about 90 ccTLDs makes it impossible to insert AAAA record in the root for any of the zone, because that will affect others. Currently, we are planning to introduce a scheme whereby each ccTLD has its own name in the ripe.net domain, eg: ns-ie.ripe.net A 193.0.12.107 AAAA 2001:610:240:0:53:cc:12:107 All of the addresses for ccTLDs (ns-XX.ripe.net) are simply IP aliases on a shared machine. Regards, Andrei Robachevsky RIPE NCC
On 08.09 09:57, Andrei Robachevsky wrote:
But also the IANA procedure will not permit it:
"5. If the number of name servers or IP addresses in the delegation exceeds eight (8), the size of responses to reasonable queries with the intended delegation will be checked to ensure that such responses fit into a 512 byte UDP packet. This is the standard size limitation for UDP response packets for most resolving name server software on the Internet today."
That is correct. It depends what a reasonable query is. If I was IANA I would advise .ie strongly to rationalise the names in their glue to save space. However, my point is that exceeding this limit will not cause the sky to fall down. Daniel
participants (2)
-
Andrei Robachevsky
-
Daniel Karrenberg