This bug was fixed in the package isc-dhcp - 4.1.ESV-R4-0ubuntu5.12
--------------- isc-dhcp (4.1.ESV-R4-0ubuntu5.12) precise; urgency=medium
* ipv6: wait for duplicate address detection to finish (LP: #1633479).
-- Scott Moser <email address hidden> Mon, 31 Oct 2016 14:30:03 -0400
This bug was fixed in the package isc-dhcp - 4.1.ESV- R4-0ubuntu5. 12
--------------- R4-0ubuntu5. 12) precise; urgency=medium
isc-dhcp (4.1.ESV-
* ipv6: wait for duplicate address detection to finish (LP: #1633479).
-- Scott Moser <email address hidden> Mon, 31 Oct 2016 14:30:03 -0400