Allow dashed DUID to be entered in a DHCPv6 Mapping. Issue #2568
(cherry picked from commit ebccd85b82f468ea83603574c8dc9c573b27ff55)
Allow dashed DUID to be entered in a DHCPv6 Mapping. Issue #2568
(cherry picked from commit ebccd85b82f468ea83603574c8dc9c573b27ff55)