diff --git a/net/rtpproxy/Makefile b/net/rtpproxy/Makefile
index fdebd1d..49b3379 100644
--- a/net/rtpproxy/Makefile
+++ b/net/rtpproxy/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rtpproxy
 PKG_VERSION:=2.1.0-20170914
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/sippy/rtpproxy.git
diff --git a/net/rtpproxy/files/rtpproxy.config b/net/rtpproxy/files/rtpproxy.config
index 760a3c3..afcf1b2 100644
--- a/net/rtpproxy/files/rtpproxy.config
+++ b/net/rtpproxy/files/rtpproxy.config
@@ -1,18 +1,22 @@
 config rtpproxy global
 	option enabled 0						# 0 - disabled, 1 - enabled
 
-config instance 'site1'                
-        option socket 'udp:127.0.0.1:7723'				# socket
+config instance 'site1'
+	option socket 'udp:127.0.0.1:7723'				# socket
 	option ipaddr '127.0.0.1'					# IPv4 address
 	option ip6addr '2001:0db8:0000:0000:0000:0000:1428:57ab'	# IPv6 address
 	option user 'nobody'						# userid to run rtpproxy instance from
 	option log_level 'INFO'						# DBUG, INFO, WARN, ERR or CRIT
 	option opts ''							# additional options for rtpproxy instance
-                                      
-config instance 'site2'               
-        option socket 'udp:127.0.0.1:7724'
-	option ipaddr '192.168.1.1'
-	option log_level 'DBUG'
+
+config instance 'site2'
+	option socket 'udp:127.0.0.1:7724'
+	option ipaddr 'lan/wan'						# Bridge mode. 'lan' and 'wan' will be
+	option user 'nobody'						# translated to IPv4 addresses by init
+	option log_level 'DBUG'						# script. Handy if using dynamic IPs. Can
+	option opts ''							# also be used with single interfaces.
+									# Translation for both 'ipaddr' and
+									# 'ip6addr' supported.
 
 config rtpproxy 'hotplug'
 	#option interface 'wan'						# uncomment to enable hotplug
diff --git a/net/rtpproxy/files/rtpproxy.init b/net/rtpproxy/files/rtpproxy.init
index ac93721..f71ec6a 100644
--- a/net/rtpproxy/files/rtpproxy.init
+++ b/net/rtpproxy/files/rtpproxy.init
@@ -28,6 +28,48 @@ run_instance() {
 	$LOGGER instance $2 has started
 }
 
+check_ip() {
+	local tmp_addr
+
+	if [ "$1" = "ipaddr" ]; then
+		network_get_ipaddr tmp_addr "$2" || tmp_addr="$2"
+	else
+		network_get_ipaddr6 tmp_addr "$2" || tmp_addr="$2"
+	fi
+
+	echo "$tmp_addr"
+}
+
+check_ipaddr() {
+	local value="$1"
+	local type="$2"
+	local param="$3"
+	local one two
+
+	[ -z "$value" ] && {
+		$LOG_ERR empty $type entry
+		exit 1
+	}
+
+	# Bail if more than 1 slash.
+	[ $(echo "$value" | awk -F "/" '{print NF-1}') -gt 1 ] && {
+		$LOG_ERR init script does not understand $type entry \""$value"\"
+		exit 1
+	}
+
+	IFS="/" read one two << EOF
+$value
+EOF
+
+	one="$(check_ip "$type" "$one")"
+	if [ -n "$two" ]; then
+		two="$(check_ip "$type" "$two")"
+		rtpproxy_options=$rtpproxy_options" $param $one/$two"
+	else
+		rtpproxy_options=$rtpproxy_options" $param $one"
+	fi
+}
+
 check_param() {
 	local param="$1"
 	local value="$2"
@@ -62,13 +104,14 @@ handle_instance() {
 	config_get log_level	"$site" log_level
 
 	check_param "-s" "$socket"
-	check_param "-l" "$ipaddr"
-	check_param "-6" "$ip6addr"
 	check_param "-u" "$user"	"nobody"
 	check_param "-d" "$log_level"	"DBUG"
 
 	check_special_param "$opts"
 
+	[ -n "$ipaddr" ]	&& check_ipaddr "$ipaddr"	ipaddr	'-l'
+	[ -n "$ip6addr" ]	&& check_ipaddr "$ip6addr"	ip6addr	'-6'
+
 	run_instance "$rtpproxy_options" "$site"
 }
 
@@ -80,6 +123,7 @@ start_service() {
 	config_get_bool enabled global enabled 0
 
 	if [ "$enabled" -eq 1 ]; then
+		. /lib/functions/network.sh
 		config_foreach handle_instance instance
 	else
 		$LOG_ERR service not enabled