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Linux Forum Index » Linux Networking » SIOCADDRT: No such device when setting lo
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Message |
| Joel Kreager |
 Posted: Sun Feb 13, 2005 6:59 pm |
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I have been trying to set up a local network to bridge through my dsl
connected computer. I am running redhat 9 but with a 2.6.10 kernel on
my main computer. Since I could not get any ping to return from my
second computer when pinging first, (I tried many things), I turned
off all the network setup /etc/sysconfig/network to off to do
everything by hand. (An emergency linux disk did return pings from
the second computer, but redhat 9 did not). When I run:
/sbin/ifconfig lo 127.0.0.1
I get:
[veryfine:~]# /sbin/ifconfig lo
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:1 errors:0 dropped:0 overruns:0 frame:0
TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:29 (29.0 b) TX bytes:29 (29.0 b)
But when I run:
/sbin/route add 127.0.0.1
I get:
SIOCADDRT: No such device
I can run:
/sbin/route add -net 127.0.0.0 netmask 255.0.0.0 gw 127.0.0.1
successfully, but I can't ping localhost.
Don't know if this is the reason I can't get a return from the redhat
host when I ping from my second computer, but I am suspicious. |
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| Floyd L. Davidson |
| Posted: Sun Feb 13, 2005 9:45 pm |
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Joel Kreager <jkreager@blarg.net> wrote:
Quote: I have been trying to set up a local network to bridge through my dsl
connected computer. I am running redhat 9 but with a 2.6.10 kernel on
my main computer. Since I could not get any ping to return from my
second computer when pinging first, (I tried many things), I turned
off all the network setup /etc/sysconfig/network to off to do
everything by hand. (An emergency linux disk did return pings from
the second computer, but redhat 9 did not). When I run:
/sbin/ifconfig lo 127.0.0.1
I get:
[veryfine:~]# /sbin/ifconfig lo
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:1 errors:0 dropped:0 overruns:0 frame:0
TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:29 (29.0 b) TX bytes:29 (29.0 b)
But when I run:
/sbin/route add 127.0.0.1
I get:
SIOCADDRT: No such device
Since you didn't give a device name, it is using "" for the name.
Read the man pages for ifconfig and route. Then try these steps in turn:
/sbin/ifconfig lo 127.0.0.1
# These are just for information:
/sbin/ifconfig lo
/sbin/route
ping 127.0.0.1 # Works because ifconfig sets a subnet route.
Quote: I can run:
/sbin/route add -net 127.0.0.0 netmask 255.0.0.0 gw 127.0.0.1
If you have deleted the route that ifconfig provided, the command
to put it back is
/sbin/route add -net 127.0.0.0 netmask 255.0.0.0 dev lo
You certainly don't need a gatway! But you do need to tell it which
interface the route applies to...
Quote: successfully, but I can't ping localhost.
Don't know if this is the reason I can't get a return from the redhat
host when I ping from my second computer, but I am suspicious.
--
Floyd L. Davidson <http://web.newsguy.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@barrow.com |
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