Date: Tue, 7 Jul 2015 16:26:24 +0300 From: Pavel Timofeev <timp87@gmail.com> To: Wei Hu <weh@microsoft.com> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: MS DNS doesn't answer to CURRENT under Hyper-V Message-ID: <CAAoTqfuDNwU2YZEj2m0UFRTEZYEFAbnvHEg9oQSapi0bbFqovg@mail.gmail.com> In-Reply-To: <BY1PR03MB14341E54D68247F7BFAE7504BB920@BY1PR03MB1434.namprd03.prod.outlook.com> References: <CAAoTqftvtQunx%2BWCL4%2BBz-mYSgqCTcGx1aAyemfaz%2B=0ogZuWw@mail.gmail.com> <BY1PR03MB14341E54D68247F7BFAE7504BB920@BY1PR03MB1434.namprd03.prod.outlook.com>
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Ok, I'll try r284745 and then r284746 and see what happens. 2015-07-07 16:06 GMT+03:00 Wei Hu <weh@microsoft.com>: >> -----Original Message----- >> From: owner-freebsd-virtualization@freebsd.org [mailto:owner-freebsd- >> virtualization@freebsd.org] On Behalf Of Pavel Timofeev >> Sent: Tuesday, July 7, 2015 7:51 PM >> To: freebsd-current@freebsd.org; freebsd-virtualization@freebsd.org >> Subject: MS DNS doesn't answer to CURRENT under Hyper-V >> >> Hi! >> I have a test virtual machine which runs CURRENT under Hyper-V. It's >> amd64 r285198 now. >> It can't get any response from MS DNS server. Well, it could two or three >> weeks ago, but after upgrade it's not able to do it anymore. >> Google DNS answers without problems meanwhile (sic!). >> >> What I do: >> # host google.ru 192.168.25.3 >> I see that MS DNS (192.168.25.3) server receives these packets, but ignores >> them. >> And no matter how my system asks MS DNS. Every daemon can't get >> response too. >> >> I know that nothing was changed in MS DNS server. No doubt. >> Then I tried different available CURRENT snapshot ISOs. >> >> FreeBSD-11.0-CURRENT-amd64-20150630-r284969-disc1.iso - MS DNS does >> not answer. >> >> FreeBSD-11.0-CURRENT-amd64-20150625-r284814-disc1.iso - MS DNS does >> not answer. >> >> FreeBSD-11.0-CURRENT-amd64-20150618-r284544-disc1.iso - MS DNS >> answers! >> >> So something was committed to CURRENT between 20150618 and 20150625. >> This something ruins communication with MS DNS. >> > There was a commit for Hyper-V TSO and checksum offloading support (r284746) on > June 24th. I think this commit is the cause. Can you verify the MS DNS behavior between > The builds of June 23rd and 24th? I will take a look of this issue tomorrow. > > Thanks, > Wei > > >
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