config stun 'stun'
	option username 'tr069_stun'
	option password 'tr069_stun'
	option server_address 'stun.l.google.com'
	option server_port '19302'
	option min_keepalive '30'
	option max_keepalive '3600'
#Log levels: Critical=0, Warning=1, Notice=2, Info=3, Debug=4
	option loglevel '0'
#	option client_port 7547
#if client_port option is not set or < 0 then use a random port for connection request source port