On Sun, 2006-01-01 at 19:51 -0700, Craig Cameron wrote:
> The problem this time is the document I'm using advises to put the
> following code in the startup script for the interfaces.It's supposed
> to be for spoofed packekts:
>
> For x in lo eth0 eth1
> Do
> Echo 1 > /proc/sys/net/ipv4/${x}/rp_filter
> Done
>
> The only startup script I can find that brings up the interfaces is:
> /etc/rc.d/rc3.d/S10network
>
> Is it safe to add the above code to this file, or is there another
> script I should be modifiying.
# tail -n 5 /etc/sysconfig/network-scripts/ifup-post
if [ -x /sbin/ifup-local ]; then
/sbin/ifup-local ${DEVICE}
fi
exit 0
So in theory if you create /sbin/ifup-local and make it executable
(chmod +x /sbin/ifup-post), it should be executed every time an
interface goes up, after the interface is up and running; the name of
the interface is passed as a parameter.
In your case, the content of /sbin/ifup-post would be:
#!/bin/sh
echo 1 > /proc/sys/net/ipv4/${1}/rp_filter
I cannot guarantee that it works, but give it a shot.
If it works, then you can consider it the "official" way to execute
something after an interface has been brought up.
--
Florin Andrei
http://florin.myip.org/
