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- #!/bin/sh
- # udhcpc script edited by Tim Riker <Tim@Rikers.org>
- [ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1
- RESOLV_CONF="/etc/resolv.conf"
- [ -e $RESOLV_CONF ] || touch $RESOLV_CONF
- [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
- [ -n "$subnet" ] && NETMASK="netmask $subnet"
- # Handle stateful DHCPv6 like DHCPv4
- [ -n "$ipv6" ] && ip="$ipv6/128"
- if [ -z "${IF_WAIT_DELAY}" ]; then
- IF_WAIT_DELAY=10
- fi
- wait_for_ipv6_default_route() {
- printf "Waiting for IPv6 default route to appear"
- while [ $IF_WAIT_DELAY -gt 0 ]; do
- if [ -z "$(ip -6 route list | grep default)" ]; then
- printf "\n"
- return
- fi
- sleep 1
- printf "."
- : $((IF_WAIT_DELAY -= 1))
- done
- printf " timeout!\n"
- }
- case "$1" in
- deconfig)
- /sbin/ifconfig $interface up
- /sbin/ifconfig $interface 0.0.0.0
- # drop info from this interface
- # resolv.conf may be a symlink to /tmp/, so take care
- TMPFILE=$(mktemp)
- grep -vE "# $interface\$" $RESOLV_CONF > $TMPFILE
- cat $TMPFILE > $RESOLV_CONF
- rm -f $TMPFILE
- if [ -x /usr/sbin/avahi-autoipd ]; then
- /usr/sbin/avahi-autoipd -c $interface && /usr/sbin/avahi-autoipd -k $interface
- fi
- ;;
- leasefail|nak)
- if [ -x /usr/sbin/avahi-autoipd ]; then
- /usr/sbin/avahi-autoipd -c $interface || /usr/sbin/avahi-autoipd -wD $interface --no-chroot
- fi
- ;;
- renew|bound)
- if [ -x /usr/sbin/avahi-autoipd ]; then
- /usr/sbin/avahi-autoipd -c $interface && /usr/sbin/avahi-autoipd -k $interface
- fi
- /sbin/ifconfig $interface $ip $BROADCAST $NETMASK
- if [ -n "$ipv6" ] ; then
- wait_for_ipv6_default_route
- fi
- # RFC3442: If the DHCP server returns both a Classless
- # Static Routes option and a Router option, the DHCP
- # client MUST ignore the Router option.
- if [ -n "$staticroutes" ]; then
- echo "deleting routers"
- route -n | while read dest gw mask flags metric ref use iface; do
- [ "$iface" != "$interface" -o "$gw" = "0.0.0.0" ] || \
- route del -net "$dest" netmask "$mask" gw "$gw" dev "$interface"
- done
- # format: dest1/mask gw1 ... destn/mask gwn
- set -- $staticroutes
- while [ -n "$1" -a -n "$2" ]; do
- route add -net "$1" gw "$2" dev "$interface"
- shift 2
- done
- elif [ -n "$router" ] ; then
- echo "deleting routers"
- while route del default gw 0.0.0.0 dev $interface 2> /dev/null; do
- :
- done
- for i in $router ; do
- route add default gw $i dev $interface
- done
- fi
- # drop info from this interface
- # resolv.conf may be a symlink to /tmp/, so take care
- TMPFILE=$(mktemp)
- grep -vE "# $interface\$" $RESOLV_CONF > $TMPFILE
- cat $TMPFILE > $RESOLV_CONF
- rm -f $TMPFILE
- # prefer rfc3397 domain search list (option 119) if available
- if [ -n "$search" ]; then
- search_list=$search
- elif [ -n "$domain" ]; then
- search_list=$domain
- fi
- [ -n "$search_list" ] &&
- echo "search $search_list # $interface" >> $RESOLV_CONF
- for i in $dns ; do
- echo adding dns $i
- echo "nameserver $i # $interface" >> $RESOLV_CONF
- done
- ;;
- esac
- HOOK_DIR="$0.d"
- for hook in "${HOOK_DIR}/"*; do
- [ -f "${hook}" -a -x "${hook}" ] || continue
- "${hook}" "${@}"
- done
- exit 0
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