2010/5/20 Kenni Lund <kenni(a)kelu.dk>:
2010/5/20 Dennis J. <dennisml(a)conversis.de>:
> 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.
Best Regards
Kenni