IPv4 in IPv6 in AAAA records

Miek Gieben miekg at atoom.net
Mon Aug 23 07:27:53 UTC 2004

[On 23 Aug, @08:31, Phil wrote in "IPv4 in IPv6 in AAAA records ..."]
> I'm not sure where this syntax originates (maybe an RFC, I haven't looked).
> But BIND and earlier NSD accepted an IPv6 format where the low order 32 bits
> could be written in dotted decimal, at least if the high order 96 bits had
> the value (in IPv6 form) ::FFFF.  So I could write an AAAA record like:
> ham.org.        12H IN  AAAA    ::FFFF:
> which would actually be the same as:
> ham.org.        12H IN  AAAA    ::FFFF:D166:C049
> It's just a slight convenience to have this.  I was just wondering if this

I think it's in the RFC to allow this, so it should be added to zonec.

But just to satisfy my own curiosity. Why do you need this?

> is supposed to be in there or not.  When I upgraded to 2.1.2 from a pre-2
> version, those records like the first one above became syntax errors, while
> those like the second one worked OK.

this is an extra reason to fix this,

grtz Miek

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