[Cialug] Ip forward question

[Tom Pohl]

You can always change the default in sysctl.conf
net.ipv4.conf.default.proxy_arp = 1

BUT that may have unintended consequences depending on if you want to do proxy_arp on all interfaces or just your select 2!

-Tom


On Dec 14, 2009, at 3:34 PM, albus wrote:

> I've got a new proxy arp firewall setup with CentOS 5.4
> 
> It has only 2 nics.
> 
> I've run 
> echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp
> echo 1 > /proc/sys/net/ipv4/conf/eth1/proxy_arp
> 
> And it all works. However every time I service network restart or reboot it drops forwarding
> until I re-issue the 2 echo lines.
> 
> Something is over writing it. From what I've Googled it's a problem others have had as well. But
> I haven't run in to how to make it permanant.
> 
> I'm about to just include the 2 echo lines in /etc/rc.local 
> But I'd rather know where to make it stick instead.
> 
> Any ideas?
> 
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