ipv4_devconf.arp_accept mystery

["Ian Brown" <ianbrn@gmail.com>]

Hello,
I have a question regarding unsolicited ARPs in ipv4/arp.c

As I understand, by default this feature is disabled;
How can one set this feature ?

When working with ipv4_devconf.arp_accept is 0 by default.
This is with 2.6.21 kernel.

I wanted ipv4_devconf.arp_accept to be set to 1.

I added:
net.ipv4.conf.default.arp_accept = 1
net.ipv4.conf.eth0.arp_accept = 1
in /etc/sysctl.conf
and rebooted.

I have:
cat /proc/sys/net/ipv4/conf/default/arp_accept
=> 1
cat /proc/sys/net/ipv4/conf/eth0/arp_accept
=>1

Yet ,the printk() I added shows that ipv4_devconf.arp_accept shows 0 !!


Could it be that this variable could not be set ? or is it dependent
upon other things ?

BTW, in newer kernel version we have IPV4_DEVCONF_ALL(ARP_ACCEPT)
instead. So if anybody knows how to set this macro (instead)to be 1, it will be
also fine.


Ian