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Date:      Tue, 26 Jan 2016 00:00:52 +0000
From:      Kylie Liang <kyliel@microsoft.com>
To:        Jac Backus <j.backus@bugworks.com>, "'freebsd-virtualization@freebsd.org'" <freebsd-virtualization@freebsd.org>, BSD Integration Components for Hyper-V <bsdic@microsoft.com>
Subject:   RE: Hyper-V networking: problem after upgrade to 10.2
Message-ID:  <8572369fcc3b408891fc1a5a7d11e892@SG2PR3002MB0107.064d.mgd.msft.net>
In-Reply-To: <cdb46889a0164856987da43537a104de@ORTELIUS.internal.bugworks.com>
References:  <cdb46889a0164856987da43537a104de@ORTELIUS.internal.bugworks.com>

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Hi Jac,=20

Thank you for asking. To isolate your issue, could you please try disabling=
 SO on your 10.2 system first? Thank you.=20

And I would like to confirm with you
1) You met issue for 10.2 kernel + 10.2 system
2) No issue for 10.1 kernel + 10.1 system
3) No issue for 10.1 kernel + 10.2 system

Right? And add our engineers in the list.=20

Thanks,
Kylie Liang=20

-----Original Message-----
From: owner-freebsd-virtualization@freebsd.org [mailto:owner-freebsd-virtua=
lization@freebsd.org] On Behalf Of Jac Backus
Sent: Tuesday, January 26, 2016 5:56 AM
To: 'freebsd-virtualization@freebsd.org' <freebsd-virtualization@freebsd.or=
g>
Subject: Hyper-V networking: problem after upgrade to 10.2

Dear reader,

Today, I did  upgrade  FreeBSD 10.1 to 10.2 running on Hyper-V on a full pa=
tched Windows Server 2012 R2 x64 version.

After the update, networking does not work anymore.

In /var/log/messages is this:

Jan 25 21:02:01 mercurius kernel: hn0: <Synthetic Network Interface> on vmb=
us0 Jan 25 21:02:01 mercurius kernel: hn0: unknown status 1073872902 receiv=
ed Jan 25 21:02:01 mercurius kernel: hn0: unknown status 1073872902 receive=
d Jan 25 21:02:01 mercurius kernel: hn0: hv send offload request succeeded =
Jan 25 21:02:01 mercurius kernel: hn0: Using defaults for TSO: 65518/35/204=
8 Jan 25 21:02:01 mercurius kernel: hn0: Ethernet address: 00:15:5d:ac:11:0=
8 Jan 25 21:02:01 mercurius kernel: hn1: <Synthetic Network Interface> on v=
mbus0 Jan 25 21:02:01 mercurius kernel: hn1: unknown status 1073872902 rece=
ived Jan 25 21:02:01 mercurius kernel: hn1: unknown status 1073872902 recei=
ved Jan 25 21:02:01 mercurius kernel: hn1: hv send offload request succeede=
d Jan 25 21:02:01 mercurius kernel: hn1: Using defaults for TSO: 65518/35/2=
048 Jan 25 21:02:01 mercurius kernel: hn1: Ethernet address: 00:15:5d:ac:11=
:09 Jan 25 21:02:01 mercurius kernel: hn2: <Synthetic Network Interface> on=
 vmbus0 Jan 25 21:02:01 mercurius kernel: hn2: unknown status 1073872902 re=
ceived Jan 25 21:02:01 mercurius kernel: hn2: unknown status 1073872902 rec=
eived Jan 25 21:02:01 mercurius kernel: hn2: hv send offload request succee=
ded Jan 25 21:02:01 mercurius kernel: hn2: Using defaults for TSO: 65518/35=
/2048 Jan 25 21:02:01 mercurius kernel: hn2: Ethernet address: 00:15:5d:ac:=
11:07

It worked fine with the 10.1 kernel, and when I boot this kernel, it works =
again:

Jan 25 22:20:02 mercurius kernel: hn0: <Synthetic Network Interface> on vmb=
us0 Jan 25 22:20:02 mercurius kernel: hn0: Ethernet address: 00:15:5d:ac:11=
:07 Jan 25 22:20:02 mercurius kernel: hn1: <Synthetic Network Interface> on=
 vmbus0 Jan 25 22:20:02 mercurius kernel: hn1: Ethernet address: 00:15:5d:a=
c:11:08 Jan 25 22:20:02 mercurius kernel: hn2: <Synthetic Network Interface=
> on vmbus0 Jan 25 22:20:02 mercurius kernel: hn2: Ethernet address: 00:15:=
5d:ac:11:09

So I am running  a 10.2 system on a 10.1 kernel at the moment.

I found nothing in /usr/src/UPDATING and not really anything on the net.

So, could you tell why does this happen, and how can I solve this?

Thanks for the help!

With kind regards,

Jac Backus



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