Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-02 Thread Rick Jones
On 06/02/2015 12:32 AM, Ian Wells wrote: The fix should work fine. It is technically a workaround for the way checksums work in virtualised systems, and the unfortunate fact that some DHCP clients check checksums on packets where the hardware has checksum offload enabled. (This doesn't work due

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-02 Thread Miguel Ángel Ajo
Ooook, fully understood now. Thanks Ihar & Ian for the clarification :) Miguel Ángel Ajo On Tuesday, 2 de June de 2015 at 13:33, Ihar Hrachyshka wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA256 > > On 06/02/2015 10:10 AM, Miguel Ángel Ajo wrote: > > The backport seems reasonable IM

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-02 Thread Ihar Hrachyshka
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 06/02/2015 10:10 AM, Miguel Ángel Ajo wrote: > The backport seems reasonable IMO. > > Is this tested in a multihost environment?. > > I ask, because given the Ian explanation (which probably I got > wrong), the issue is in the NET->NIC->VM path

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-02 Thread Miguel Ángel Ajo
nvolve an iptables rule. > > > > > > -Ryan > > > > > > -----Original Message- > > > From: Mark McClain [mailto:m...@mcclain.xyz] > > > Sent: Monday, June 01, 2015 6:47 PM > > > To: OpenStack Development Mailing List (not for

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-02 Thread Ian Wells
#x27;t involve an iptables rule. >> >> -Ryan >> >> -Original Message- >> From: Mark McClain [mailto:m...@mcclain.xyz] >> Sent: Monday, June 01, 2015 6:47 PM >> To: OpenStack Development Mailing List (not for usage questions) >> Subject: Re:

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-01 Thread Kevin Benton
an > > -Original Message- > From: Mark McClain [mailto:m...@mcclain.xyz] > Sent: Monday, June 01, 2015 6:47 PM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev] [Neutron] virtual machine can not get DHCP > lease due packe

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-01 Thread Tidwell, Ryan
others might be looking into that didn't involve an iptables rule. -Ryan -Original Message- From: Mark McClain [mailto:m...@mcclain.xyz] Sent: Monday, June 01, 2015 6:47 PM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [Neutron] virtual

Re: [openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-01 Thread Mark McClain
> On Jun 1, 2015, at 7:26 PM, Tidwell, Ryan wrote: > > I see a fix for https://bugs.launchpad.net/neutron/+bug/1244589 merged during > Kilo. I'm wondering if we think we have identified a root cause and have > merged an appropriate long-term fix, or if > https://review.openstack.org/148718 w

[openstack-dev] [Neutron] virtual machine can not get DHCP lease due packet has no checksum

2015-06-01 Thread Tidwell, Ryan
I see a fix for https://bugs.launchpad.net/neutron/+bug/1244589 merged during Kilo. I'm wondering if we think we have identified a root cause and have merged an appropriate long-term fix, or if https://review.openstack.org/148718 was merged just so there's at least a fix available while we inve