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Re: IPv6 expert wanted

2003-10-26 13:53:09
Meng Weng Wong <mengwong(_at_)dumbo(_dot_)pobox(_dot_)com> writes:

We need someone to represent IPv6 --- I know nothing about it!

Couple questions: what do MX records look like under IPv6?

Should I expect to see 

  domain.com IN MX ipv4.mx.domain.com
  domain.com IN MX ipv6.mx.domain.com

  ipv4.mx    IN A     192.0.2.1
  ipv6.mx    IN AAAA  f:o:o:b:a:r:b:a:z:q:u:u:x or whatever?

I am not an expert, but I do use IPv6.

What you have is basically correct, just a couple of points.

1) It is possible for a single MX to have both IPv4 A and IPv6 AAAA
   records

2) The format is the 128bit address split into 8 16bit values
   expressed in hex and separated by ':' with the convention that
   consecutive high order zero values are represented by '::'. So
   1234:5678:0:0:0:0:9abc:def0 would be written 1234:5678::9abc:def0

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