#!/bin/sh
[ "$1" = "-u" ] && UPDATE=true || UPDATE=false

IP=`ip a s dev eth0 | sed -n '/inet 10\./s:.*inet \([^/ ]*\).*:\1:p'`

doit() {
	HOST=$1
	DOMAIN="ad.analog.com"
	FQDN="$HOST.$DOMAIN"

	if ${UPDATE} ; then
		currip=$(dig +short $FQDN)
		[ "${currip}" = "${IP}" ] && return 0
	fi

	cat <<-EOF | nsupdate
	server 10.64.53.110
	update delete $FQDN A
	update add $FQDN 86400 A $IP
	send
	EOF
}

doit vapier-adi
doit vapier