Xen. KVM, network bridging and multiple nics

[Jack]

Objective: I'm installing XEN on a server I'm building. The server has two NICs, and will have a dual connection to the Internet, with 5 fixed used IP addresses. I plan to run 3 guests. One of those guests will use two IPs , hopefully. 

Reading the KVM documentation (I'm also considering KVM, if XEN doesn't work out) and the XEN documentation leaves me a bit confused on the network bridging.

The XEN documentation seems to indicate you NEED to have two NICs to do this. The KVM documentation seems to indicate you need to bridge in order for the guests to be network visible. But what I want to do is make sure that either one or both NICs are visible to any given guest. 


So can I bridge, both NICs independently? Or merge them into one fatter pipe? Or something else.

Thanks,
Jack
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