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

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

--- Comment #20 from Alexandre martins <alexandre.martins at stormshield.eu> ---
Hello,

Another crash has appear this night. It is the same race as the destroy part,
but in the create:

Thread 1 (ifconfig laggport):
Creates the port (with the DISABLE flag), and sets the type of the iface. This
thread will set ifp->if_lagg in few instruction ...

Thread 2 (network):
Checks the type and enter lagg_input function and crashes because the pointer
if_lagg is still NULL

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