169.254.0.0/16 is a much less well-known CIDR block
that contains nonroutable IP addresses
. This address block is best known to Windows
users, as Windows picks a random address from the CIDR block whenever it fails to get a response to a DHCP
request (the Obtain an IP address
automatically box in the Networking Control Panel
). This is known as Automatic Private IP Adressing
DHCP Client Lease has instruction for re-asking for an IP address if this happens to you.
For those interested in these things: ARIN lists 169.254.0.0/16 as LINKLOCAL.