This bug was fixed in the package isc-dhcp - 4.1.ESV-R4-0ubuntu5.11
--------------- isc-dhcp (4.1.ESV-R4-0ubuntu5.11) precise; urgency=medium
* Don't assume IPv6 prefix length of 64 (LP: #1609898). Pulled from debian commit c347ab8a43587164486ce1f104eedfd638594e59.
-- Dan Streetman <email address hidden> Thu, 04 Aug 2016 13:07:23 -0400
This bug was fixed in the package isc-dhcp - 4.1.ESV- R4-0ubuntu5. 11
--------------- R4-0ubuntu5. 11) precise; urgency=medium
isc-dhcp (4.1.ESV-
* Don't assume IPv6 prefix length of 64 (LP: #1609898). 4486ce1f104eedf d638594e59.
Pulled from debian commit c347ab8a4358716
-- Dan Streetman <email address hidden> Thu, 04 Aug 2016 13:07:23 -0400