[Bug 237660] Networking bridge config with vlan bug?

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237660

            Bug ID: 237660
           Summary: Networking bridge config with vlan bug?
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: peo_s at incedo.org

Hi

I have a firewall where I have named vlan interfaces and the IP:s directly on
the vlan interfaces. All good there...

Now... To use bhyve with vlans in bridge setups I think I have found a bug
(This is just a lab as I usually use SR-IOV...)

Now I have struggled a bit, but now know what is wrong.... This is FreeBSD
12.0p3 relese


#### This is my switch port. 
interface 1/g8
description 'MISC TRUNK - LABORATION'
switchport mode trunk
switchport trunk native vlan 2008
switchport trunk allowed vlan 2-4,21,899,2008
vlan participation exclude 1,999
exit


Setting an IP directly on the vlan interface and it works OK
Setting an IP directly on a bridge not connected to a vlan and it works OK (but
of course the switch port must be reconfigured for that first to an access
port)
But... if I try to set the IP on the bridge that has a named vlan interface
attached, it simply did not work to communicate.

I have used this vlan config scheme below a-lot before, but not with bridges.
It looks 100% ok with ifconfig.  But it does not work.

#### *NOT* WORKING ####
ifconfig_re0="up"
cloned_interfaces="bridge2 "
vlans_re0="vlan2"
create_args_vlan2="vlan 2"
ifconfig_vlan2_descr="Local LAN network interface (vlan 2)"
ifconfig_bridge2_name="LAN_BRIDGE"
ifconfig_LAN_BRIDGE="inet 192.168.0.35/24 addm vlan2 up"
ifconfig_vlan2="up"



Now... I had to try something... :) so I rewrote the config in a different way.
This also looks ok with ifconfig. Bu THIS, THIS WORKS.

#### WORKING ####
ifconfig_re0="up"
cloned_interfaces="bridge2"
vlans_re0="2"
ifconfig_re0_2_descr="Local LAN network interface (vlan 2)"
ifconfig_bridge2="inet 192.168.0.35/24 addm re0.2 up"
ifconfig_re0_2="up"



I think there maybe is a bug. Otherwise, please enlighten me of my stupidity :)

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