pfSense

export PATH=/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/local/sbin

if [ "${2}" == "inet" ]; then

	OLD_ROUTER=`cat /tmp/${1}_router`

		echo "Removing states to old router ${OLD_ROUTER}" | logger -t ppp-linkup

		pfctl -i ${1} -k 0.0.0.0/0 -k ${OLD_ROUTER}/32

	fi

	# let the configuration system know that the ipv4 has changed.

	echo ${4} > /tmp/${1}_router

	if grep -q dnsallowoverride /conf/config.xml; then

		# write nameservers to file

		echo -n "" > /var/etc/nameserver_${1}

		fi

		if echo "${7}" | grep -q dns2; then

			echo "${DNS2}" >> /var/etc/nameserver_${1}

			route change "${DNS2}" ${4}

		fi

		pfSctl -c 'service reload dns'

	fi

	pfSctl -c "interface newip ${1}"

elif [ "${2}" == "inet6" ]; then

	# let the configuration system know that the ipv6 has changed.

	echo ${4} |cut -d% -f1 > /tmp/${1}_routerv6

	if grep -q dnsallowoverride /conf/config.xml; then

		# write nameservers to file

		echo -n "" > /var/etc/nameserver_v6${1}

		fi

		if echo "${7}" | grep -q dns2; then

			echo "${DNS2}" >> /var/etc/nameserver_v6${1}

			route change -inet6 "${DNS2}" ${4}

		fi

		pfSctl -c 'service reload dns'

	fi

	pfSctl -c "interface newipv6 ${1}"

fi

exit 0