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@stargieg
Forked from corny/dynv6.sh
Last active January 2, 2017 21:51
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Update script for dynv6.com to set your IPv4 address and IPv6 prefix
#!/bin/sh -e
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 [ -n "$device" ]; then
device="dev $device"
fi
if [ "$(uname)"=="Darwin" ] ; then
for i in $(ifconfig | grep 'inet6 [0-e].* autoconf secured' | cut -d ' ' -f2);do
address="$i"
break
done
else
address=$(ip -6 addr list scope global $device | grep -v " fd" | sed -n 's/.*inet6 \([0-9a-f:]\+\).*/\1/p' | head -n 1)
fi
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"
exit
fi
# send addresses to dynv6
$bin "http://dynv6.com/api/update?hostname=$hostname&ipv6=$current&token=$token"
$bin "http://ipv4.dynv6.com/api/update?hostname=$hostname&ipv4=auto&token=$token"
# save current address
echo $current > $file
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