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Erratum for RFC 2308

RFC 2308, "Negative Caching of DNS Queries (DNS NCACHE)", March 1998

Reported By: Hideshi Enokihara <Hideshi.Enokihara@jp.yokogawa.com>
Date: Thu, 2 Feb 2006 16:07:04 +0900

UNVERIFIED
Section 7.2 says:

 7.2 Dead / Unreachable Server (OPTIONAL)
 
    Dead / Unreachable servers are servers that fail to respond in any
    way to a query or where the transport layer has provided an
    indication that the server does not exist or is unreachable.  A
    server may be deemed to be dead or unreachable if it has not
    responded to an outstanding query within 120 seconds.
 
    Examples of transport layer indications are:
 
       ICMP error messages indicating host, net or port unreachable.
       TCP resets
       IP stack error messages providing similar indications to those above.
 
    A server MAY cache a dead server indication.  If it does so it MUST
    NOT be deemed dead for longer than five (5) minutes.  The indication
    MUST be stored against query tuple <query name, type, class, server
    IP address> unless there was a transport layer indication that the
    server does not exist, in which case it applies to all queries to
    that specific IP address.
It should say:
 7.2 Dead / Unreachable Server (OPTIONAL)
 
    Dead / Unreachable servers are servers that fail to respond in any
    way to a query or where the transport layer has provided an
    indication that the server does not exist or is unreachable.  A
    server may be deemed to be dead or unreachable if it has not
    responded to an outstanding query within 120 seconds.
 
    Examples of transport layer indications are:
 
       ICMP error messages indicating host, net or port unreachable.
       TCP resets
       IP stack error messages providing similar indications to those above.
 
    A resolver MAY cache a dead server indication.  If it does so it MUST
    NOT be deemed dead for longer than five (5) minutes.  The indication
    MUST be stored against query tuple <query name, type, class, server
    IP address> unless there was a transport layer indication that the
    server does not exist, in which case it applies to all queries to
    that specific IP address.
Rationale:
Last sentence says, "A server MAY cache a dead server indication.".
But, this "server" is typo, I think.
This "server" should be "resolver" because section 7.1's last sentence uses "resolver".