Just now, I was writing memo of the Ubuntu VM in Hyper-V, and read again
https://technet.microsoft.com/en-us/windows-server-docs/compute/hyper-v
/supported-ubuntu-virtual-machines-on-hyper-v , this time. I found that
"TCP Segmentation and Checksum Offloads" are available on Windows Server
en, even following https://technet.microsoft.com/en-us/windows-server-
docs/compute/hyper-v/supported-ubuntu-virtual-machines-on-hyper-v , and
install the virtual kernel:
`sudo ethtool eth0` still not able to get the detail info of NIC
Settings for eth0:
Supported ports: [ ]
This is probably a bug in the Linux HyperV Card driver.
Maybe it's MS job to correct this. I don't know who has responsibility on this
package.
But, I confirm it is not a bug in the guest hyperV system or windows. I have
ipv6 windows servers (multiple versions) and they all work correctly with
I've just read this: https://support.microsoft.com/en-hk/kb/2701206 , is
it possible that MS should do the fixing? not the side on Linux?
Besides, I install Ubuntu 16.04.1 on OpenVZ and VirtualBox, they are
working happily, only the guest VM in Hyper-V has this issue.
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I also confirm this issue. All IPv6 udp are blocked (guest vm by
Hyper-V)
using frederic-druilhet's comment 11
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584042/comments/11
ethtool --offload eth0 rx off tx off
the IPv6 udp works.
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I can confirm this issue.
I'm currently experiencing it with newly installed Ubuntu Server 16.04.
I also can confirm that this issue was not present in 14.04.
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Spotted, sorry :)
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https://bugs.launchpad.net/bugs/1584042
Title:
Hyper-V NIC cannot pass IPv6 UDP packets by default until protocol
offload is disabled
Status in linux
It's at the bottom of the bug description.
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1584042
Title:
Hyper-V NIC cannot pass IPv6 UDP
On "client" and "server":
Setting up linux-headers-4.6.0-040600 (4.6.0-040600.201605151930) ...
Setting up linux-headers-4.6.0-040600-generic (4.6.0-040600.201605151930) ...
Setting up linux-image-4.6.0-040600-generic (4.6.0-040600.201605151930) ...
root@Server:/# uname -a
Linux Server
Sorry, on my previous post, I forgot to copy paste this fail before setting
offload off:
Also, I didn't find where to add the tag kernel-bug-exists-upstream ??
root@Client:/# dig @2001:660:660c:120::2000 testubuntu NS
; <<>> DiG 9.10.3-P4-Ubuntu <<>> @2001:660:660c:120::2000 testubuntu NS
; (1
This issue could exist since a long time. Having only 3 servers, each
nameserver, did hide the problem (as each could resolve)
In my numerous tests, I made a virtual machine using an old Ubuntu server 15.04
and the problem was present. But,in the meanwhile, my bind server was having
troubles
Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6
root@Client:/home/ssi# uname -a
Linux Client 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
root@Client:/home/ssi# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 16.04 LTS
Release:16.04
Codename:
Please at least report your kernel version.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1584042
Title:
Hyper-V
Hi ! I'sorry but I can't apport-collect;
Due to ipv4 adress lack and network isolation, my servers are setup ipv6 only
and launchpad.net only resolves in ipv4
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