Server Identifier option added
Minimal bug fix in calculate_internet_checksum function
Support for Option Request Option added
Support for Preference Option added
Minmal bug-fix in calculate_internet_checksum
DHCPv6 Elapsed time option added
Server Unicast option added.
But couldn't see the option showing in wireshark
support DHCP6 IANA, IATA options added
Status Code Option added
Rapid Commit Option added
User Class option added
Vender Class Option added
changed PGEN_ERROR macro (errno is not needed as an argument for a macro)