Thanks for the reply. I figured it out yesterday. I just edited the VM Custom Mac Address and it works like a champ now... I will setup that range and it should be good to go.. I am running oVirt 4.0.. oVirt is a nice product, beats the heck out of Xen Server.. On Sun, Sep 25, 2016 at 6:57 AM, Yevgeny Zaspitsky <yzaspits(a)redhat.com&gt; wrote: > oVirt does not produce IP addresses, but it allocates MAC addresses to > vNics on VMs it creates. > A MAC address serves as the base for an IPv6 address allocation (either > by IPv6 router advertisement for global addresses or by an operation system > for local addresses). > > BTW, 2 vNics with the same MAC address in the same LAN, would cause layer > 2 (Ethernet) malfunctioning too. > > In order to make the 2 oVirt's produce different MAC addresses you need > to adjust the definition of the MAC-pool ranges to be non-overlapping each > to another. > You could find MAC-pool definitions under a DC definitions in v4.0 and > under a cluster in v4.1. > > Regards, > Yevgeny > > On Sat, Sep 24, 2016 at 5:44 PM, Allen Warren <dallenwarren(a)gmail.com&gt; > wrote: > >> I have two oVirt servers running as local servers on the same network. >> How do I prevent the servers from creating the same ipv6 address for two >> different vm's. If I start a vm on the first server and then start one on >> the second server the ipv6 addresses are the same.. >> >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> >> >