[Bug 261746] hn(4): Communication stops when enabling SR-IOV secondary mlx5en(4) interface (640FLR-SFP28) on Windows Server 2022

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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 08 Feb 2022 17:39:36 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261746

--- Comment #9 from Michael <michael.adm@gmail.com> ---
> Does manually re-adding the IP address for the hn/mce interface or setting
> the link up/down change anything?

No. Up/Down - doesn't change anything.

root@frw05v5:~ # ifconfig
. . .
hn1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=8051b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,TSO4,LRO,LINKSTATE>
        ether 00:15:5d:d0:8b:43
        inet 172.27.172.23 netmask 0xffffff00 broadcast 172.27.172.255
        media: Ethernet 10GBase-CR1 <full-duplex,rxpause,txpause>
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
mce0: flags=8a43<UP,BROADCAST,RUNNING,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=8805bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,LINKSTATE>
        ether 00:15:5d:d0:8b:43
        media: Ethernet 10GBase-CR1 <full-duplex,rxpause,txpause>
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
root@frw05v5:~ # ifconfig hn1 down
root@frw05v5:~ # ifconfig hn1 up
root@frw05v5:~ # ifconfig mce0 down
root@frw05v5:~ # ifconfig mce0 up

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