Re: workaround for VMware WS NAT bug triggered by OpenSSH 7.8p1 changes

From: Yuri Pankov <yuripv_at_yuripv.net>
Date: Sat, 22 Dec 2018 23:13:49 +0300
Cy Schubert wrote:
> In message <913730b6-c6f0-60b8-a589-e89e872b7f42_at_yuripv.net>, Yuri 
> Pankov write
> s:
>> Yuri Pankov <yuripv_at_yuripv.net> wrote:
>>> In-Reply-To: <CAGGgMJf45vkNY6o6-in+kiAFHxsFZpKBc4Oa6qiCFnzKnRjk1g_at_mai
> l.gmail.
>>> com>
>>> Mark Peek wrote:
>>>> On Fri, Dec 21, 2018 at 9:30 PM Enji Cooper <yaneurabeya_at_gmail.com>
>  wro=
>>> te:
>>>> =20
>>>>>
>>>>>> On Dec 21, 2018, at 17:48, Yuri Pankov <yuripv_at_yuripv.net> wrote:
>>>>>>
>>>>>> Mark Peek wrote:
>>>>>>> Thanks for the cc:. I forwarded the original report on to an 
> interna=
>>> l
>>>>>>> VMware desktop product contact.
>>>>>>
>>>>>> Thank you.
>>>>>>
>>>>>>> What version of Workstation or Fusion is this occurring on? I 
> saw
>>>>>>> Workstation 14 mentioned but curious if it occurs on 
> Workstation 15
>>>>>>> (latest).
>>>>>>
>>>>>> Running the latest available for download: 15.0.2 build-10952284.
>>>>>
>>>>> This is affecting me on VMware Fusion 11.0.1-11.0.2. I know it 
> wasn=E2=
>>> =80=99t
>>>>> affecting me on 10.x. I didn=E2=80=99t install 11.0.0, so I 
> don=E2=80=99=
>>> t know if it
>>>>> affects that version...
>>>>>
>>>>> Thanks so much!
>>>>>
>>>>> -Enji
>>>> =20
>>>> =20
>>>> BTW, there appears to be a workaround here using -o 
> 'IPQoS=3Dthroughput=
>>> '
>>>> (untested by me). I've seen the issue forwarded internally but no 
> furth=
>>> er
>>>> discussions yet.
>>>> =20
>>>> https://communities.vmware.com/thread/590825
>>
>> Yes, that's exactly what the patch attached to original message does if
>> we are running as a VMware guest.  The workaround is known and it works,
>> but it's not immediately clear and I just wanted it to be the default
>> for the time being.
> 
> The patch assumes VMWARE_GUEST_WORKAROUND unconditionally. Is this 
> intended?

It's the added code that is ifdef'ed VMWARE_GUEST_WORKAROUND, so it can
be ripped out easily when no longer needed, and yes, it's enabled
unconditionally for now.  And the check itself is if 'kern.vm_guest'
reports 'vmware'.

> Juxtaposed to this, at $JOB where our VMware guests (mostly Linux and 
> Windows) running on VMware clusters with NSX network (with plans to 
> totally virtualize the network), we've noticed other network 
> quirkiness, most notably with NFS between unlike O/S's, i.e. Solaris 
> <--> Linux. I'm not surprised that this regression also exists.
> 
> 



Received on Sat Dec 22 2018 - 19:14:06 UTC

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