Remove the unspecified gateway from linux routing table
Eugène Ngontang
sympavali at gmail.com
Tue Feb 17 10:43:10 UTC 2015
Hi all,
I've a remote linux machine whose the routing table is :
[root at hostname]# 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
eth0
10.10.10.16 0.0.0.0 255.255.255.240 U 0 0 0
eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0
eth0
The default gateway I should use is 10.10.10.17, and should be given by a
linux dhcp server. So to be able to connect to the system I call someone on
the site ask him to add the route manually (**route add default gw
10.10.10.17**).
When the route has been added I can now connect to the system. And once
connected when I check the routing table again I have this :
[root at hostname]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
0.0.0.0 10.10.10.17 0.0.0.0 UG 0 0 0
eth0 (UG flag means it's up and is the gateway)
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0
eth0
10.10.10.16 0.0.0.0 255.255.255.240 U 0 0 0
eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0
eth0
And when I restart the system, it boots without the right default gateway,
and I'm obliged to call again to set the route manually. The dhclient lease
file has the good **"option routers"** taken from the dhcp server.
Now I'm trying to remove the unspecified route from the routing table but
each time I try I'm disconnected from the machine.
I've tried these different ways :
route del -net 0.0.0.0 netmask 0.0.0.0 metric 0
route del default gw 0.0.0.0
route del -net 0.0.0.0 gw 0.0.0.0
The three attempts disconected me from the server, and the guy at the other
side tells me that each time I try to remove the route the default route
becomes a star (**default ***). I'm obliged to let him add the route again
mannualy, and when I'm connected, and I restart the network I lose the
connection again.
So my questions are :
1) Why does this unspecified default route come back every time?
2) How can I (what's the way to) remove it without spoiling the routing
table (losing the good default gateway).
Thanks.
Regards,
Eugène NG
--
ngonta_e at epitech.net
sympavali at gmail.com
------------------------------------------------------------
*Aux hommes il faut un chef, et au*
* chef il faut des hommes!L'habit ne fait pas le moine, mais lorsqu'on te
voit on te juge!*
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