Comment 8 for bug 1551351

Doug, was that granted when running dhclient manually? Which would be the initial lease case. When I looked at this last one would get a new lease whenever dhclient got started (once). Same would happen if one killed the daemon (-11) and then did an ifdown && ifup. If there is a means of having a session without network (like vnc/spice screen of a VM or serial over lan).
The dhcp server did not log any requests after the initial one.

Jamie, maybe. A quick check could be cat /proc/<pid of daemon>/stack (as root).