2012/9/5 andi abes <andi.a...@gmail.com> > I've heard of folks having issues with UDP checksum not being > generated correctly, and having success by running the command below > on the nova compute nodes. > > iptables -A POSTROUTING -t mangle -p udp --dport 68 -j CHECKSUM > --checksum-fill >
Yeah, I've seen the checksum issue on > 3.2 kernels, but it's there also on 3.2 which works fine. Maybe they've added a more strict check. A temp workaround is to put the interface in promiscous mode which some guys reported it to work. Ale > > > I'm not sure if this affects the versions you're working with. > > On Wed, Sep 5, 2012 at 10:41 AM, Anton Haldin <ahal...@griddynamics.com> > wrote: > > I have the same issue ( kernel 3.5 , guest vm cannot get response from > > dnsmasq ) > > > > > > On Fri, Aug 10, 2012 at 7:08 AM, Lorin Hochstein < > lo...@nimbisservices.com> > > wrote: > >> > >> > >> On Aug 9, 2012, at 3:22 AM, Alessandro Tagliapietra > >> <tagliapietra.alessan...@gmail.com> 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 > >> > >> _______________________________________________ > >> Mailing list: https://launchpad.net/~openstack > >> Post to : openstack@lists.launchpad.net > >> Unsubscribe : https://launchpad.net/~openstack > >> More help : https://help.launchpad.net/ListHelp > > > > > > > > _______________________________________________ > > Mailing list: https://launchpad.net/~openstack > > Post to : openstack@lists.launchpad.net > > Unsubscribe : https://launchpad.net/~openstack > > More help : https://help.launchpad.net/ListHelp > > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp >
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