[Bug 258258] igb - batch creating vlans causes ifconfig %100 cpu usage - dmesg: igbX: Hardware Initialization Failed

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258258

--- Comment #1 from Ozkan KIRIK <ozkan.kirik@gmail.com> ---
adding 0.2 sleep between ifconfig commands, solves problem. But this is only a
work around, not a fix.
This is a big problem for the systems that have huge number of vlan interfaces.

working solution:

seq 2 4000 | xargs -t -L 1 -I % bash -c "ifconfig igb5.% create; sleep 0.2"

but it takes toooooo long to complete.

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