bin/43221: ssh(1) doesn't support MAC 'umac-64%openssh.com@localhost'

[tron%zhadum.org.uk@localhost]

>Number:         43221
>Category:       bin
>Synopsis:       ssh(1) doesn't support MAC 'umac-64%openssh.com@localhost'
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 29 08:05:00 +0000 2010
>Originator:     tron%zhadum.org.uk@localhost
>Release:        NetBSD 5.99.27
>Organization:
Matthias Scheler                                  http://zhadum.org.uk/
>Environment:
System: NetBSD lyssa.zhadum.org.uk 5.99.27 NetBSD 5.99.27 (LYSSA) #0: Fri Apr 
23 11:26:15 BST 2010 tron%lyssa.zhadum.org.uk@localhost:/src/sys/compile/LYSSA 
i386
Architecture: i386
Machine: i386
>Description:
The ssh_config(1) manual page claims that the default list of MAC algorithms
supported by ssh(1) looks like this:

                   hmac-md5,hmac-sha1,umac-64%openssh.com@localhost,
                   hmac-ripemd160,hmac-sha1-96,hmac-md5-96

But 'umac-64%openssh.com@localhost' doesn't actually work:

tron@lyssa:~>ssh -m umac-64%openssh.com@localhost colwyn
Unknown mac type 'umac-64%openssh.com@localhost'

The other algorithms are really supported:

tron@lyssa:~>ssh -m hmac-ripemd160 colwyn     
Last login: Thu Apr 29 08:53:37 2010 from excalibur.zhadum.org.uk
NetBSD 5.0_STABLE (COLWYN.64) #0: Mon Jan 25 15:37:55 GMT 2010

Welcome to NetBSD!

tron@colwyn:~>

>How-To-Repeat:
ssh -m umac-64%openssh.com@localhost <hostname>

>Fix:
We should either change the manual page or enable support for the
missing MAC algorithm.