IP Allocation

Dima Volodin dvv at sprint.net
Wed Nov 20 17:19:23 UTC 1996

You can use MX records with a port number in the PREFERENCE field and a
single 4-byte label in the EXCHANGE field. Or use TXT RRs of whatever
format you bloody will.


Jim Fleming writes:
> Some might also claim that there is a limitation in DNS
> system because "port" numbers can not easily be returned
> with an IP address. If that had been possible, then one IP
> address could have been used and different TCP port numbers.
> With the introduction of AAAA records into the DNS system,
> there is now an opportunity to send 128 bit binary quantities.
> Part of that quantity can be interpreted as a 32 bit IP address
> and part can be interpreted as a port number.
> --
> Jim Fleming
> UNETY Systems, Inc.
> Naperville, IL
> e-mail:
> JimFleming at unety.net
> JimFleming at unety.net.s0.g0 (EDNS/IPv8)

More information about the NANOG mailing list