This bug was fixed in the package isc-dhcp - 4.3.5-3ubuntu2.3
--------------- isc-dhcp (4.3.5-3ubuntu2.3) artful; urgency=medium
* dhclient-script.linux: handle empty case also when waiting for ipv6 link local DAD. (LP: #1718568)
-- Dan Streetman <email address hidden> Fri, 02 Mar 2018 13:14:51 -0500
This bug was fixed in the package isc-dhcp - 4.3.5-3ubuntu2.3
---------------
isc-dhcp (4.3.5-3ubuntu2.3) artful; urgency=medium
* dhclient- script. linux: handle empty case also when waiting for ipv6 link
local DAD. (LP: #1718568)
-- Dan Streetman <email address hidden> Fri, 02 Mar 2018 13:14:51 -0500