Network interface discovery in Linux isn't work.

[mfilippov]

Hi. I have problem. Network interface discovery in Linux isn't work.
I try on check agent machine:

#sudo -u zabbix zabbix_agentd -t net.if.discovery
net.if.discovery                              [s|{
	"data":[
		{
			"{#IFNAME}":"lo"},
		{
			"{#IFNAME}":"eth2"},
		{
			"{#IFNAME}":"eth3"},
		{
			"{#IFNAME}":"dna0"},
		{
			"{#IFNAME}":"dna1"}]}]

All is correct but on server:

#zabbix_get -s 192.168.0.1 -k net.if.discovery
{
	"data":[]}

Where is problem?