lldpd: add management IP setting

add option to set management IP pattern

also add missing 'unconfigure system hostname'

for example pattern '!192.168.1.1' makes it possible that
WAN IP is selected instead of LAN IP

Signed-off-by: Daniel A. Maierhofer <git@damadmai.at>
[grammar and spelling fixes in commit message]
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

package/network/services/lldpd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lldpd
 PKG_VERSION:=1.0.5
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://media.luffy.cx/files/lldpd

package/network/services/lldpd/files/lldpd.config

@@ -5,7 +5,7 @@ config lldpd config
 	option enable_edp 1
 
 	option agentxsocket /var/run/agentx.sock
-	
+
 	option lldp_class 4
 	option lldp_location "2:FR:6:Commercial Rd:3:Roseville:19:4"
 
@@ -13,6 +13,8 @@ config lldpd config
 	#option lldp_description "OpenWrt System"
 	#option lldp_hostname "Modified Hostname"
 
+	#option lldp_mgmt_ip "!192.168.1.1"
+
 	# interfaces to listen on
 	list interface "loopback"
 	list interface "lan"

package/network/services/lldpd/files/lldpd.init

@@ -42,11 +42,15 @@ write_lldpd_conf()
 		fi
 	done
 
+	local lldp_mgmt_ip
+	config_get lldp_mgmt_ip 'config' 'lldp_mgmt_ip'
+
 	# Clear out the config file first
 	echo -n > "$LLDPD_CONF"
 	[ -n "$ifnames" ] && echo "configure system interface pattern" "$ifnames" >> "$LLDPD_CONF"
 	[ -n "$lldp_description" ] && echo "configure system description" "\"$lldp_description\"" >> "$LLDPD_CONF"
 	[ -n "$lldp_hostname" ] && echo "configure system hostname" "\"$lldp_hostname\"" >> "$LLDPD_CONF"
+	[ -n "$lldp_mgmt_ip" ] && echo "configure system ip management pattern" "\"$lldp_mgmt_ip\"" >> "$LLDPD_CONF"
 
 	# Since lldpd's sysconfdir is /tmp, we'll symlink /etc/lldpd.d to /tmp/$LLDPD_CONFS_DIR
 	[ -e $LLDPD_CONFS_DIR ] || ln -s /etc/lldpd.d $LLDPD_CONFS_DIR
@@ -103,6 +107,8 @@ reload_service() {
 		unconfigure lldp custom-tlv
 		unconfigure system interface pattern
 		unconfigure system description
+		unconfigure system hostname
+		unconfigure system ip management pattern
 	EOF
 	# Rewrite lldpd.conf
 	# If something changed it should be included by the lldpcli call