Re: how to get IPv6 prefix length on Tru64

[Vladislav Yasevich]

Jinmei

This allows for a shortcut.  The 'ip6prefix' keyword allows
the user a fake autoconfig.  It will use the provide prefix
(iff it's /64) with the IID to create an address.
For example, on my system:

# ifconfig -v tu0
tu0: flags=c63<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST,SIMPLEX>
     HWaddr 08:00:2b:e5:4e:f7
     inet6 fe80::a00:2bff:fee5:4ef7
# ifconfig tu0 inet6 ip6prefix 3ffe:1200:4110:1::/64
# ifconifg tu0
tu0: flags=c63<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST,SIMPLEX>
     inet6 fe80::a00:2bff:fee5:4ef7
     inet6 3ffe:1200:4110:1:a00:2bff:fee5:4ef7
Or, I could have done

# ifconfig tu0 inet6 3ffe:1200:4110:1:a00:2bff:fee5:4ef7

to configure the whole address.

-vlad

JINMEI Tatuya / ???? wrote:
On Tue, 30 Sep 2003 09:44:16 -0400, 


I see, thanks for the information.  But please let me check one
related thing: the man page of ifconfig(8) says:
   13. To create an IPv6 address for prefix AB:CD:CE:AB, enter:
            # ifconfig tu0 inet6 ip6prefix AB:CD:CE:AB::/64
If the prefix lengths are supposed to be static, what does "64" mean
above?  What happens if we specify other values there?  (I don't have
a super user privilege on the target machine, so I cannot check it by
myself.)
Thanks,

                                        JINMEI, Tatuya
                                        Communication Platform Lab.
                                        Corporate R&D Center, Toshiba Corp.
                                        [EMAIL PROTECTED]

--
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Vladislav Yasevich              Linux and Open Source Lab
Hewlett Packard                 Tel: (603) 884-1079
Nashua, NH 03062                ZKO3-3/T07
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