https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242081
Bug ID: 242081
Summary: dhclient doesn't exit on link down event, and devd is
only configured to start dhclient on link up.
Product: Base System
Version: 11.3-RELEASE
Hardware: i386
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: conf
Assignee: [email protected]
Reporter: [email protected]
dhclient does not exit when interfaces transition down, it merely unconfigures
the last lease on that interface, then sits there.
As devd.conf is only configured to start dhclient on link up events, not
restart dhclient if it's running, this causes hosts to fall off the network
(dhclient is running but does not do anything but poll() -- there may be a bug
in the state machine handling?)
I've been able to work around it for now by adding a devd.conf entry that stops
dhclient on link down events, causing the link up start entry to work properly.
Some options:
1) dhclient is fixed to exit correctly (as documented in the man page.)
- This might be some sort of state machine handling bug that would be worth
digging into.
2) devd.conf's link up entry is modified to perform a restart, rather than a
start, to allow it to function if dhclient is still running.
3) devd.conf as shipped has a link down entry that stops dhclient.
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