net.if.out[eth0,bytes]] became not supported: Not supported by Zabbix Agent

[tag-com.net]

I have a few servers monitored by zabbix. I didn't have any problem before I tried to add a Debian 5 one, this is what i get when I try to monitor traffic on eth0 interface.

 14622:20130630:172723.439 item [tag-na.tag-com.net:net.if.in[eth0,bytes]] became not supported: Not supported by Zabbix Agent
 14619:20130630:172728.479 item [tag-na.tag-com.net:net.if.out[eth0,bytes]] became not supported: Not supported by Zabbix Agent

This is the agent version :

zabbix_agentd -V
Zabbix Agent (daemon) v1.8.2 (revision 11211) (29 March 2010)
Compilation time:  Sep  6 2012 08:32:01

And this is the server version :

abbix_server -V
Zabbix Server v1.8.11 (revision 26205) (20 March 2012)
Compilation time: Apr 10 2012 20:50:08

The weird part is if I call the function directly on the client it works :

root@TAG-NA:~#  zabbix_agentd -t "net.if.in[eth0,bytes]"
net.if.in[eth0,bytes]                         [u|583855]

If anyone can point me in the right direction I'm going crazy here!
Thanks

[tchjts1]

Try replacing that particular agent binary with a newer one and restart the agent. I think 1.8.15 would be a good choice. That would be located about halfway down this page:

http://www.zabbix.com/download2.php

[tag-com.net]

Thanks for the help.
I thought i could be a version problem so i decided to update all my zabbix infrastructure to 2. It was time to do that anyway.
But still the same problem the eth0 interface is never discover on that particular host. But it is on all my other servers.
The only difference between that server and the other is this one is monitored over internet instead of a private network. But I checked on the firewall and no packet is being dropped(I did have the add a NAT rule).

[richlv]

https://www.zabbix.com/forum/showthread.php?t=10341

http://forums.grsecurity.net/viewtopic.php?f=3&t=2160

[tag-com.net]

Thanks that was it.
A new kernel did the trick
Thanks!