unable to delete entry from routing table (SIOCDELRT: No such process)

[JVincent08]

I can't seem to delete one of the entries in my routing table.

[root@JC-Linux-Box ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 ppp0
[root@JC-Linux-Box ~]# route del 192.168.2.0
SIOCDELRT: No such process
[root@JC-Linux-Box ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 ppp0
[root@JC-Linux-Box ~]#

However, if I shut down eth0...

[root@JC-Linux-Box ~]# ifconfig eth0 down
[root@JC-Linux-Box ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 ppp0
[root@JC-Linux-Box ~]#

It's gone! And it comes right back when I bring up eth0. I want to delete it so I can change the gateway. Any ideas?

[kakariko81280]

As you noticed, that route is linked to your network card. It is stating that everything on the 192.168.2.0/24 network is directly connected to your network card. It's automatically derived from your IP and netmask.

You don't need to get rid of this to change your gateway.

route del default gw 0.0.0.0
route add default gw <new gateway>

Let us know how you get on,

Chris...

[HROAdmin26]

Yes, as mentioned, this is not a "gateway" route - it says that if your machine needs to reach any hosts on 192.168.2.0/24, just broadcast an arp using eth0.

It should not/cannot be deleted.

You have no "gateway" route specified in your routing table. A gateway has flag "G".

Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
192.168.100.0   0.0.0.0         255.255.255.0   U         0 0          0 vmnet8
192.168.200.0   0.0.0.0         255.255.255.0   U         0 0          0 vmnet1
10.66.90.0      0.0.0.0         255.255.254.0   U         0 0          0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U         0 0          0 lo
0.0.0.0         10.66.90.1      0.0.0.0         UG        0 0          0 eth0

[JVincent08]

Ohh I see.. Thanks for putting up with my ignorance guys