It’s definitely a problem for the 10G x7-- NICs that Intel is currently selling (I’ve been working on porting the driver). It would require coordinated firmware and driver updates because the driver to firmware interface isn’t defined for this case. I don’t want to publicly say why, but I would hazard a guess there is no way that would ever happen.
And from a practical standpoint, one needs NICs to scan packets and route different streams to different receive queues -- it’s still not possible for a single core to handle a 10G data stream. Especially if you are also breaking checksum offload, etc. As for NICs, I don't think that is much of a problem any more. We now expect them to be programmable to easily support new protocols. So skipping over some new EH to find port numbers isn't much of an issue (actually, it's the same code they would use with IPv6 so it's just a matter of enabling the protocol numbers for new EH).
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