* Kenni Lund <[email protected]> [20100520 17:42]: > 2010/5/20 Kenni Lund <[email protected]>: > > 2010/5/20 Dennis J. <[email protected]>: > >> On 05/20/2010 12:05 PM, Kenni Lund wrote: > >>> Hello > >>> > >>> I just bought a new hosted server in a data center, which I'm going to > >>> run a few virtual machines on with libvirt/KVM. > >>> > >>> The server have 4 public IP addresses, but due to the data center, > >>> bridges are not an option. > >> > >> Why exactly is that? I don't see what one has to do with the other? > > > > I'm actually not exactly sure, but I think it is because a bridge > > needs to have a valid MAC-address? And the datacenter doesn't allow > > (eg. they block) data from unknown sources/MAC addresses. That said, I > > haven't tested it, but their documentation mentions the use of a > > routed network in virtual environments, as bridges will not work. > > Or perhaps it's even more simple; The host and the additional > addresses are not on the same subnet, eg. a bridge working at the > datalink layer is unaware of the procedures performed on the upper > level protocols, like IP addressing, while a router takes care of > this.
Or you could use 1:1 NAT and use all three extra addresses for your VM's. Might take some fiddling with the iptables setup on the phys-host, but should be doable. -- Anders Rayner-Karlsson <[email protected]> All-Round Linux Tinkerer, RHCE and PITA DeLuxe _______________________________________________ virt mailing list [email protected] https://admin.fedoraproject.org/mailman/listinfo/virt
