rpcd-mod-luci: Fix parsing of DUID-LLT's in duid2ea
Fix parsing of DUID-LLT's in duid2ea. Unlike DUID-LL's, DUID-LLT's have a 32-bit time field between the hardware type and link-layer address fields, see RFC 3315 Sections 9.2 and 9.4:
https://tools.ietf.org/html/rfc3315#section-9.2
https://tools.ietf.org/html/rfc3315#section-9.4
therefore, the link-layer address starts at offset 16 instead of 8.
Signed-off-by: Niels Widger <niels@qacafe.com>
(cherry picked from commit
8920a2bf71e544fada3de824126a5c8f1c596b63)