The v0.150.0 'orphaned dhclient' cleanup killed guest 9201's DHCP client, not a
host one: LXC guests share the host PID namespace, so the missing eth0, pidfile
and lease file were all true ON THE HOST and all irrelevant. Lease expired ~80
min later, guest lost its address, tunnel/hub/catalog/agent all went dark.
Restored; records the one-command ownership check (/proc/<pid>/cgroup) and
leaves the unsupervised-dhclient risk open for a ruling with R-50.
