net-snmp: monitor ifindex changes

When an ifindex for an interface changes, some monitoring tools can no
longer find the interface and send alerts. Monitor all network
interfaces via the procd netdev parameter, so that
/etc/init.d/snmpd reload will restart snmpd if any ifindex changed.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

net/net-snmp/files/snmpd.init

@@ -159,6 +159,10 @@ start_service() {
 	procd_set_param file $CONFIGFILE
 	procd_set_param respawn
 
+	for iface in $(ls /sys/class/net 2>/dev/null); do
+		procd_append_param netdev "$iface"
+	done
+
 	procd_close_instance
 }