Modify serverSide.php to deal with ipv6

servers with ipv6 support will format ipv4 addresses as ipv6.  this cleans it up with the added bonus that ipv6 addresses are still correct.
update linodeDynDNS.sh to force ipv4 ip

force cURL to use ipv4
Merge pull request #1 from brendanhowell/master

Some tweaks to work with with IPv6 enabled servers