[K12OSN] Strange route table 169.254.0.0

Roger morris_r at 4j.lane.edu
Wed Feb 9 21:29:44 UTC 2005


Around Wed, Feb 09, 2005 at 03:18:41PM -0600,  Jim Kronebusch, wrote:
>    The standard IP address to assign to a system that can't obtain a dhcp
>    address is 169.254.x.x (can't remember the rest).  So my guess is your
>    eth1 is setup for dhcp but is not grabbing an address and defaulting
>    to 169.254.x.x and that is why you show routing for 169.254.0.0
> 
> 
there is no rest of 169.254.x.x, the computer will try and assign itself
in the 169.254.0.0/16 range.  I think the computer will attempt to
determine if a specific 3 octet is used, then assign an IP in that
range.  ie, if the first computer self assigns 169.254.5.23 , then the
second one would self assign something in 169.254.5.0/24.  Hmm, just
thinking, I don't recall if the netmask on a self assigned is
255.255.255.0, or 255.255.0.0. 

RFC 3330 lists special use IPV4 addresses.

-- 
Roger Morris
687-3579
morris_r at 4j.lane.edu




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