Name

RT (Route Through—experimental)

Textual representation:

                     owner ttl class RT preference intermediate-host

Example:

sh.prime.com.  IN  RT  2   Relay.Prime.COM.
               IN  RT  10  NET.Prime.COM.

Binary representation:

RT type code: 21
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    |                  PREFERENCE                   |
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
    /                 INTERMEDIATE                  /
    /                                               /
    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

where:

PREFERENCE

A 16 bit integer that specifies the preference given to this RR among others at the same owner. Lower values are preferred.

EXCHANGE

A domain-name that specifies a host that will serve as an intermediate in reaching the host specified by owner.

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