[Bug 236102] When create or destroy vlan, the physical interface is flapping

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236102

Eugene Grosbein <eugen at freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |eugen at freebsd.org

--- Comment #2 from Eugene Grosbein <eugen at freebsd.org> ---
Does it help if you do "ifconfig ix0 -vlanhwtag -vlanhwfilter" before creating
vlan?

Some NICs chips re-establish link when host reprogramms their in-chip vlan
mask. If you disable hardware-assisted vlan filtering to perform it at OS
driver level, you shoud stop reprogramming chip while creating/destroying
vlans.

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