[Bug 234846] [lagg] race condition when adding port

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234846

--- Comment #19 from Alexandre martins <alexandre.martins at stormshield.eu> ---
Hi Eugene,

The patch seems to work for the creation part.

However, the race into the destroy part is still here:

Thread 1 (network):
ether_input checks the type of the interface and will call lagg_input

Thread 2 (ifconfig -laggport):
delete the port, and resets the type of the iface and set ifp->if_lagg = NULL;

Thread 1 (network):
is entering lagg_input function and crash because the pointer if_lagg is now
NULL

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