Add force mtu option to dhcp-client.

[people/pmueller/ipfire-2.x.git] / src / initscripts / init.d / networking / dhcpcd.exe

########################################################################
# Begin
#
# Description : DHCP Client Script
#
# Authors     : Arne Fitzenreiter - arne_f@ipfire.org
#
# Version     : 02.00
#
# Notes       : 
#
########################################################################

. /etc/sysconfig/rc
. $rc_functions


eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
eval $(/usr/local/bin/readhash /var/ipfire/dns/settings)

dhcpcd_up()
{
	set | grep "^new_" | sed "s|^new_||g" | \
	sort > /var/ipfire/dhcpc/dhcpcd-$interface.info

	#Check if this was the Red device...
	if [ ! "$interface" == "$RED_DEV" ]; then
		exit 0;
	fi

	# Only if RED_TYPE=DHCP update /var/ipfire/red
	if [ "$RED_TYPE" == "DHCP" ]; then

		#Force MTU option for KabelDeutschland because this ISP
		#set the MTU to 576 instead of the supportet 1500
		if [ $RED_DHCP_FORCE_MTU -ge 576 ]; then
			logger -p local0.info -t dhcpcd.exe[$$] "Force mtu to $RED_DHCP_FORCE_MTU"
			ip link set $interface mtu $RED_DHCP_FORCE_MTU
		fi

		#Check if we have to restart the services at update
		[ ! -e "/var/ipfire/red/active" ] update=1;
		if [ "$old_domain_name_service" != "$new_domain_name_service" ]; then
			update=1;
		fi
		if [ "$old_ip_address" != "$new_ip_address" ]; then
			update=1;
		fi
		if [ "$old_routers" != "$new_routers" ]; then
			update=1;
		fi

		#Get DNS from dhcp
		if [ -n "$DNS0" ] && [ -n "$DNS1" ]; then
			logger -p local0.info -t dhcpcd.exe[$$] "Overwritting DNS-Server addresses with ${DNS0},${DNS1}"	
			echo -n ${DNS0} > /var/ipfire/red/dns1
			echo -n ${DNS1} > /var/ipfire/red/dns2
		else
			echo -n `/etc/rc.d/helper/getdnsfromdhcpc.pl 1` > /var/ipfire/red/dns1
			echo -n `/etc/rc.d/helper/getdnsfromdhcpc.pl 2` > /var/ipfire/red/dns2
		fi

		#Get IP Address
		echo -n "$new_ip_address"  > /var/ipfire/red/local-ipaddress

		#Get default gateway
		grep -v " gateway$" /etc/hosts > /tmp/hosts
		echo "$new_routers gateway"  >> /tmp/hosts
		mv /tmp/hosts /etc/hosts

	fi
	if [ $update ]; then
		[ -e "/var/ipfire/red/active" ] || touch /var/ipfire/red/active
		echo -n "$new_routers" > /var/ipfire/red/remote-ipaddress
		logger -p local0.info -t dhcpcd.exe[$$] "$interface has been (re)configured with IP=$new_ip_address"
		run_subdir ${rc_base}/init.d/networking/red.up/
		touch /var/ipfire/red/active
	fi
}

dhcpcd_down()
{
	set | grep "^new_" | sed "s|^new_||g" | \
	sort > /var/ipfire/dhcpc/dhcpcd-$interface.info

	# Only if RED_TYPE=DHCP update /var/ipfire/red
	if [ "$RED_TYPE" == "DHCP" ]; then
		logger -p local0.info -t dhcpcd.exe[$$] "${interface} has been brought down"
		rm -f /var/ipfire/red/active
		run_subdir ${rc_base}/init.d/networking/red.down/
	fi
}

case "$reason" in
BOUND|INFORM|REBIND|REBOOT|RENEW|TIMEOUT|STATIC)	dhcpcd_up;;
PREINIT|EXPIRE|FAIL|IPV4LL|NAK|NOCARRIER|RELEASE|STOP)	dhcpcd_down;;
esac