weizhouapache commented on issue #3802: OVS Provider not visible under Network Service Providers for guest network URL: https://github.com/apache/cloudstack/issues/3802#issuecomment-573576555 > Also the reason I raised it as GRE doesn't seem to work, and as it doesn't appear under UI so I doubt if there is something broken. > > If you have only 1 KVM node and it's the node where **Virtual Router** is running, then instances will get IP from the VNI specified during setup. > But if you add 2nd KVM node, no matter what you do, it will never get an IP from Virtual Router. > If now I migrate virtual router to this new KVM node, instances will get the IPs. > > So basically, OVS GRE tunnel is not working on ACS 4.12, I have asked **@andrijapanicsb** to advise if GRE is still in use on ACS or should we move away from it and trying some other option for OVS tunnel to work, awaiting his response from that thread. @shoaibjdev do you use default network offering or new offering created by following instruction http://docs.cloudstack.apache.org/projects/archived-cloudstack-getting-started/en/latest/networking/ovs-plugin.html#network-offerings ?
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