From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 15 Apr 2011 10:20:35 -0700
From: Lyndon Nerenberg <lyndon@orthanc.ca>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
In-Reply-To: <175377.10777.qm@web39321.mail.mud.yahoo.com>
Message-ID: <alpine.BSF.2.00.1104151018330.4385@legolas.orthanc.ca>
References: <175377.10777.qm@web39321.mail.mud.yahoo.com>
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Subject: Re: [9fans] 564/udp
Topicbox-Message-UUID: d04cdc72-ead6-11e9-9d60-3106f5b1d025

> According to the IANA* 9pfs is registered as both 564/tcp and 564/udp.

It's the IANA bureaucracy.  You get both TCP and UDP assignments,
regardless of whether you actually need both.