freebsd stable - Feb 2006 - multiple IPv6 addressing

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

...

Hi,
>>>>> On Wed, 22 Feb 2006 15:36:05 -0800
>>>>> Sean McNeil <sean@mcneil.com> said:
sean> I seem to think that this behaved differently, but perhaps not.  Is
this
sean> appropriate behavior?...

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

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

Yes, it is expected default behavior.  You may want to use
ip6addrctl(8) to change this behavior.  Please refer the manpage of
ip6addrctl(8).

Sincerely,

--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org  ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/