Netscaler VPX: DHCP support

This is a quick recipe for enabling DHCP for your Netscaler VPX on KVM:

1. Boot the KVM VPX instance per the instructions on the citrix site.
2. Create /nsconfig/nsbefore.sh


#!/bin/sh

mkdir /var/db # to store lease files
mkdir /var/empty
/sbin/dhclient -l /var/db/dhclient.leases.1 0/1


3. Create /nsconfig/nsafter.sh


#!/bin/sh

ADDR=`grep fixed-address /var/db/dhclient.leases.1 | awk '{print $NF}' | sed -e 's/;//' | uniq | tail -1`
SUBNET=`grep subnet-mask /var/db/dhclient.leases.1 | awk '{print $NF}' | sed -e 's/;//' | uniq | tail -1`
GATEWAY=`grep routers /var/db/dhclient.leases.1 | awk '{print $NF}' | sed -e 's/;//' | uniq | tail -1`

grep "$ADDR" /nsconfig/ns.conf
if [ $? != 0 ]; then
nscli -U :nsroot:nsroot "set ns config -IPAddress $ADDR -netmask $SUBNET"
nscli -U :nsroot:nsroot "savec"
sleep 5
yes | nscli -U :nsroot:nsroot "reboot"
fi

grep "$GATEWAY" /nsconfig/ns.conf

if [ $? != 0 ]; then
nscli -U :nsroot:nsroot "add route 0.0.0.0 0.0.0.0 $GATEWAY"
nscli -U :nsroot:nsroot "savec"
fi


4. Power off your Netscaler VPX and save the disk image as a DHCP-enabled template.