4587 snoop misdecodes DHCPv6 DHCPV6_DUID_LL identifiers
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed by: Marcel Telka <marcel@telka.sk>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Robert Mustacchi <rm@joyent.com>