vm-bhyve で vlan
https://github.com/churchers/vm-bhyve/wiki/Virtual-Switches#assigning-a-vlan-number
2024.05 原因わかったかも
→ブリッジでvlanタグあり、タグなしを混在できない？
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276936 2024
FreeBSD 14.0 ix0 Intel(R) X520 82599ES (SFI/SFP+) で同じ問題が発生
未解決
bhyve with vlans - host and vm can't pass traffic | The FreeBSD Forums
http://freebsd.1045724.x6.nabble.com/bhyve-with-vlans-host-and-vm-can-t-pass-traffic-td6006791.html
Solved - bhyve networking issues with ix, lagg, tap, and bridge | The FreeBSD Forums
