I would like also to add something may helps; that I did the devstack installation before on Centos and I did not fce this problem, but Now I am using Ubuntu 14.04 so may be the issue is here ?
Best regards, Ahmed On Monday, June 20, 2016, Ahmed Medhat <[email protected]> wrote: > i add it but it is not working also. > May be This iptables rule for traffic reaching the dhcp port but there > should be one in the other direction and be dport 67 ? > > Best regards, > Ahmed > > On Monday, June 20, 2016, Neil Jerram <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> In that case I guess you are somehow missing the iptables rule that fills >> in the CHECKSUM properly on DHCP replies. Is the problem fixed if you add >> the following iptables rule in the DHCP namespace on the network node? >> >> iptables -A POSTROUTING -t mangle -p udp --dport 68 -j CHECKSUM >> --checksum-fill >> >> Neil >> >> >> >> >> On Mon, Jun 20, 2016 at 9:30 AM Ahmed Medhat <[email protected]> >> wrote: >> >>> Hi Neil, >>> >>> Thanks for your reply. >>> >>> I have done tcpdump on dhcp port of the private network in Openstack and >>> I saw the received dhcp request and replies. It seems tgat the replies are >>> not received to the VM. >>> I want to add tgat if I adjusted the ip manually inside the VM instance >>> , it works fine and I can ping the dhcp ip 11.0.0.2 in my case. >>> >>> I hope this info shows you where could be the problem I have. >>> >>> Best regards, >>> Ahmed >>> >>> >>> On Monday, June 20, 2016, Neil Jerram <[email protected]> wrote: >>> >>>> Hi Ahmed, >>>> >>>> Unfortunately there are many possible reasons - and different ones >>>> depending on your setup. >>>> >>>> I will guess, though, that you're using a default OVS setup, without >>>> DVR. In that case DHCP should be provided by Dnsmasq running on your >>>> network node, and I would start by checking for that process and looking at >>>> its logs (which could be in /var/log/syslog, /var/log/messages, journalctl, >>>> ...) to see if there is any sign of DHCP requests being received, and then >>>> whether Dnsmasq sends any DHCP responses. >>>> >>>> Regards, >>>> Neil >>>> >>>> >>>> On Sat, Jun 18, 2016 at 1:34 PM Ahmed Medhat <[email protected]> >>>> wrote: >>>> >>>>> Hi All, >>>>> >>>>> I have installed kilo devstack and have a problem with dhcp, it is not >>>>> assigning IPs to the VMs. >>>>> What are the reasons for that ? >>>>> >>>>> Best regards, >>>>> Ahmed >>>>> _______________________________________________ >>>>> Mailing list: >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> Post to : [email protected] >>>>> Unsubscribe : >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> >>>>
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