interfaces: add logging to PPP link scripts to check for overlap

Currently we neither see when we spawn a new mpd5 daemon nor when
the PPPoE starts or stops working or if there is any overlap.

src/opnsense/scripts/interfaces/ppp-linkdown.sh

@@ -4,10 +4,8 @@ export PATH=/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/local/sbin
 
 IF="${1}"
 AF="${2}"
-IP="${3}"
-GW=
 
-DEFAULTGW=$(route -n get -${AF} default | grep gateway: | awk '{print $2}')
+/usr/bin/logger -t ppp "ppp-linkdown: executing on ${1} for ${2}"
 
 ngctl shutdown ${IF}:
 

src/opnsense/scripts/interfaces/ppp-linkup.sh

@@ -18,6 +18,8 @@ if [ -n "${4}" ]; then
 	ROUTER="-a $(echo ${4} | cut -d% -f1)"
 fi
 
+/usr/bin/logger -t ppp "ppp-linkup: executing on ${1} for ${2}"
+
 if [ "${2}" = "inet" ]; then
 	/usr/local/sbin/ifctl -i ${1} -4nd ${DNS1} ${DNS2}
 	/usr/local/sbin/ifctl -i ${1} -4rd ${ROUTER}