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Provide Gateway address in DHCP response for PXE clients, so they can use internet

pull/63/head
TomasM 2018-11-22 06:13:30 -05:00
parent 263216ab42
commit 5a090f6ac4
1 changed files with 11 additions and 2 deletions
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13
Slax/debian/rootcopy/usr/bin/pxe
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@ -8,15 +8,23 @@ LIVE=/run/initramfs
FTPROOT=/var/state/dnsmasq/root FTPROOT=/var/state/dnsmasq/root
# find out our own IP address. If more interfaces are available, use the first one # find out our own IP address. If more interfaces are available, use the first one
IP="$(ls -1 /sys/class/net | egrep -v '^lo$' | sort | head -n 1 | xargs -r ifconfig | fgrep "inet " | tr -s " " | cut -d " " -f 3)" IP="$(hostname -I | cut -d " " -f 1)"
GW=$(ip route show | grep default | grep -o "via.*" | cut -d " " -f 2)
# if no IP is assigned to this computer, setup private address randomly # if no IP is assigned to this computer, setup private address randomly
if [ "$IP" = "" ]; then if [ "$IP" = "" ]; then
killall dhcpcd 2>/dev/null killall dhclient 2>/dev/null
IP="10."$(($RANDOM/130+1))"."$(($RANDOM/130+1))".1" IP="10."$(($RANDOM/130+1))"."$(($RANDOM/130+1))".1"
ifconfig $(ls -1 /sys/class/net | egrep -v '^lo$' | sort | head -n 1) $IP netmask 255.255.255.0 ifconfig $(ls -1 /sys/class/net | egrep -v '^lo$' | sort | head -n 1) $IP netmask 255.255.255.0
fi fi
# if gateway is not recognized, lets make our IP a gateway and enable forwarding
if [ "$GW" = "" ]; then
GW="$IP"
echo 1 > /proc/sys/net/ipv4/conf/all/forwarding
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
fi
echo Starting PXE server on $IP ... echo Starting PXE server on $IP ...
# calculate C class range # calculate C class range
@ -71,6 +79,7 @@ APPEND initrd=/initrfs.img load_ramdisk=1 prompt_ramdisk=0 rw printk.time=0 $(ca
# start the DHCP server and TFTP server # start the DHCP server and TFTP server
dnsmasq --enable-tftp --tftp-root=/var/state/dnsmasq/root \ dnsmasq --enable-tftp --tftp-root=/var/state/dnsmasq/root \
--dhcp-boot=pxelinux.0,"$IP",$IP \ --dhcp-boot=pxelinux.0,"$IP",$IP \
--dhcp-option=3,$GW \
--dhcp-range=$RANGE.2,$RANGE.250,infinite --log-dhcp --dhcp-range=$RANGE.2,$RANGE.250,infinite --log-dhcp
# start HTTP server at port 7529 (that are the numbers you type on your phone to write 'slax') # start HTTP server at port 7529 (that are the numbers you type on your phone to write 'slax')