DHCPv6 decoder fix
- fix the tests for DH6OPT_SIP_SERVER_D, DH6OPT_DOMAIN_LIST and DH6OPT_NTP_SERVER,
- add missing ")".
Merge pull request #316 from fxlb/master

 DHCPv6 decoder fix (reviewed, fixed, squashed and rebased)
Use byte offset instead of rip_dest (a 32-bit field) to extract
16-bit field in order to avoid type punning.  This fixes compile
on IA64 platforms.
Merge pull request #314 from delphij/master

Don't use rip_dest (a 32-bit field) to extract 16-bit.