[Cialug] Ip forward question

[David Champion]

Ideally... it would be nice if there were an option in the 
/etc/sysconfig/network-scripts config files (where redhat-ish distros 
put the networking stuff), but I guess you can't have those do every 
possible networking combination... ;)

I'm assuming you ran the network config admin tool and checked for a 
proxy_arp option? You might also see if one of the alternatative admin 
tools like Webmin will do the config you're looking for, and see where 
it writes the change.

-dc

Barry Von Ahsen wrote:
> tack 'em on the bottom of /etc/init.d/network with some comment about 
> #stupid RH networking, grumble grumble ?
>
> then forget about it for six months until there's an update that 
> clobbers your changes
>
>
> -barry
>
>
> Tom Pohl wrote:
>   
>> 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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