On 03/13/2015 06:25 PM, Georgios Dimitrakakis wrote: > If I do an : > > arping -U -I etho x.x.x.x > > where x.x.x.x is the IP address. > > I can almost immediately access them outside of the subnet! I had forgotten that, Still is that the very same set of options the OpenStack code uses? > Do you mean that OpenStack is sending a gratuitous ARP for all > and the router is ignoring them unless it is for a specific IP address? > > If this is the case is there anything I can do? I will second the suggestion of getting a packet trace to see just what sort of ARP traffic the compute node(s) send and then compare that with the documentation for your router. rick > > Regards, > > George > > >> On 03/13/2015 04:55 PM, Georgios Dimitrakakis wrote: >>> The value is 10 >>> >>> Do you believe that it should be bigger? >> >> These accesses of instances which are being delayed by 20 minutes - >> are they delayed for other instances in the subnet, or just for >> accesses from outside the subnet (ie through a real router)? >> >> There may be some rather "conservative" routers out there which might >> not accept gratuitous ARPs, considering it more secure to ARP for >> those IPs explicitly itself. >> >> rick jones >> >> >> _______________________________________________ >> Mailing list: >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack at lists.openstack.org >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack at lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack