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Re: DHCP and kernel > 3.2

To: Alessandro Tagliapietra <tagliapietra.alessandro@xxxxxxxxx>
From: Lorin Hochstein <lorin@xxxxxxxxxxxxxxxxxx>
Date: Thu, 9 Aug 2012 23:08:58 -0400
Cc: "openstack@xxxxxxxxxxxxxxxxxxx" <openstack@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <6FD36BDD-6FF8-4995-9320-13229A124D9F@gmail.com>

On Aug 9, 2012, at 3:22 AM, Alessandro Tagliapietra <tagliapietra.alessandro@xxxxxxxxx> wrote:

> Hello guys,
> 
> i've just installed kernel 3.4 from Ubuntu kernel PPA archive and after this upgrade VM aren't able to get the DHCP address but with tcpdump i see the request and offer on the network.
> Someone else experienced this? I've tried also with 3.3, same story. Rolling back to 3.2 and everything works fine.
> 

When I had a similar problem the issue turned out to be that I needed to configure the NIC on the compute host to be in promiscuous mode, otherwise the DHCP response wouldn't make it to the VM. 

Lorin

Sent from my iPad

Follow ups

Re: DHCP and kernel > 3.2
From: Anton Haldin, 2012-09-05

References

DHCP and kernel > 3.2
From: Alessandro Tagliapietra, 2012-08-09