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From: Sean McNeil <sean@mcneil.com>
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Date: Wed, 22 Feb 2006 15:36:05 -0800
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Subject: multiple IPv6 addressing
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I seem to think that this behaved differently, but perhaps not.  Is this
appropriate behavior?...

triton# host ferrari
ferrari has address 10.1.0.50
ferrari has IPv6 address xxxx:xxxx:xxxx:xxxx:xx0e:xbxx:xxca:77cf
ferrari has IPv6 address xxxx:xxxx:xxxx:xxxx:xxc0:xfxx:xxa7:aea

If I do a ping6 ferrari, it alternates between the 2 addresses.  I
thought it tried to figure out which was working.  Seems that systems
will often have multiple IPv6 addresses especially for something like a
laptop with a wireless and wired connection.

triton# ping6 ferrari
PING6(56=40+8+8 bytes) xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx -->
xxxx:xxxx:xxxx:xxxx:xxc0:fxx:xxa7:aea

triton# ping6 ferrari
PING6(56=40+8+8 bytes) xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx -->
xxxx:xxxx:xxxx:xxxx:xx0e:xbxx:xxca:77cf

triton# ping6 ferrari
PING6(56=40+8+8 bytes) xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx -->
xxxx:xxxx:xxxx:xxxx:xxc0:fxx:xxa7:aea

...