> > I got an additional entry when I run “netstat –rn” on my fedora host,
> > an “169.254.0.0 …” entry appears without being invited. I know that
> > 169.254.0.0/16 is a private address block for some kind of special
> > purposes, and it appears in “ifup” script, But my question is: what does
> > this entry mean? And How to get rid of it if it does nothing except
> > bring security holes? Since it is routable now through my hosts’ exneral
> > interface, ridicules..
>
> It means you have an additional network card, without an active
> connection. The card tries to retrieve an IP address from a DHCP server
> which is supposedly not present. Then this address will be assigned to it.
I don't think that is the case. In my situation the machine has a single
network card, eth0, with static addressing, yet there is indeed the route
to 169.254/16 out eth0. This is what the OP was questioning.
- Mike
eth0 Link encap:Ethernet HWaddr 00:B0:D0:7B:8F:AD
inet addr:10.107.2.57 Bcast:10.107.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8818054 errors:0 dropped:0 overruns:0 frame:0
TX packets:10028512 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:929495147 (886.4 Mb) TX bytes:103464711 (98.6 Mb)
Interrupt:16 Base address:0xdc80
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2433195 errors:0 dropped:0 overruns:0 frame:0
TX packets:2433195 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:390314885 (372.2 Mb) TX bytes:390314885 (372.2 Mb)
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
10.107.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 <--- why?
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 10.107.2.1 0.0.0.0 UG 0 0 0 eth0
cat /etc/sysconfig/network-scripts/ifcfg-eth0
# 3Com Corporation|3c905C-TX/TX-M [Tornado]
DEVICE=eth0
BOOTPROTO=none
BROADCAST=10.107.2.255
HWADDR=00:B0:D0:7B:8F:AD
IPADDR=10.107.2.57
NETMASK=255.255.255.0
NETWORK=10.107.2.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=no
GATEWAY=10.107.2.1
