smj10j · March 21, 2017 11:50 · perroud · Jan 13, 2017 · steveharman · Mar 21, 2017
diff --git a/dynv6.sh b/dynv6.sh
 #!/bin/sh -e

 ##
 ## 03/03/2015 
 ## Updates IPv4 and IPv6 on DynV6.com on OSX
 ## https://gist.github.com/smj10j/6730d6136eb206e9b9bc
 ## Original at https://gist.github.com/corny/7a07f5ac901844bd20c9
 ##
 ## Example call: 
 ## token=<token> ./dynv6.sh <your dynv6 hostname>
 ## 
 ## Read more: http://dynv6.com/hosts/1401/instructions
 ##

 hostname=$1
 device=$2
 file=$HOME/.dynv6.addr6
 [ -e $file ] && old=`cat $file`

 if [ -z "$hostname" -o -z "$token" ]; then
  echo "Usage: token=<your-authentication-token> [netmask=64] $0 your-name.dynv6.net [device]"
  exit 1
 fi

 if [ -z "$netmask" ]; then
  netmask=128
 fi

 if [ -z "$device" ]; then
  device="en0"
 fi
 address=$(ifconfig $device inet6 | grep -v " fd" | sed -n 's/.*inet6 \([0-9a-f:]\+\).*/\1/p' | head -n 1)

 if [ -e /usr/bin/curl ]; then
  bin="curl -fsS"
 elif [ -e /usr/bin/wget ]; then
  bin="wget -O-"
 else
  echo "neither curl nor wget found"
  exit 1
 fi

 if [ -z "$address" ]; then
  echo "no ipv6 address found"
  exit 1
 fi

 # address with netmask
 current=$address/$netmask

 if [ "$old" = "$current" ]; then
  echo "ipv6 address unchanged"
  echo "sending anyway in case ipv4 has changed"
  # exit
 fi

 # send addresses to dynv6
 $bin "http://dynv6.com/api/update?hostname=$hostname&ipv6=$current&ipv4=auto&token=$token"

 # save current address
 echo $current > $file
	#!/bin/sh -e

	##
	## 03/03/2015
	## Updates IPv4 and IPv6 on DynV6.com on OSX
	## https://gist.github.com/smj10j/6730d6136eb206e9b9bc
	## Original at https://gist.github.com/corny/7a07f5ac901844bd20c9
	##
	## Example call:
	## token=<token> ./dynv6.sh <your dynv6 hostname>
	##
	## Read more: http://dynv6.com/hosts/1401/instructions
	##

	hostname=$1
	device=$2
	file=$HOME/.dynv6.addr6
	[ -e $file ] && old=`cat $file`

	if [ -z "$hostname" -o -z "$token" ]; then
	echo "Usage: token=<your-authentication-token> [netmask=64] $0 your-name.dynv6.net [device]"
	exit 1
	fi

	if [ -z "$netmask" ]; then
	netmask=128
	fi

	if [ -z "$device" ]; then
	device="en0"
	fi
	address=$(ifconfig $device inet6 \| grep -v " fd" \| sed -n 's/.inet6 \([0-9a-f:]\+\)./\1/p' \| head -n 1)

	if [ -e /usr/bin/curl ]; then
	bin="curl -fsS"
	elif [ -e /usr/bin/wget ]; then
	bin="wget -O-"
	else
	echo "neither curl nor wget found"
	exit 1
	fi

	if [ -z "$address" ]; then
	echo "no ipv6 address found"
	exit 1
	fi

	# address with netmask
	current=$address/$netmask

	if [ "$old" = "$current" ]; then
	echo "ipv6 address unchanged"
	echo "sending anyway in case ipv4 has changed"
	# exit
	fi

	# send addresses to dynv6
	$bin "http://dynv6.com/api/update?hostname=$hostname&ipv6=$current&ipv4=auto&token=$token"

	# save current address
	echo $current > $file