[RFC] Support DHCPv6 and UEFI IPv6 PXE

[Michael Chang]

Hi,

This patch set tries to make support of configuring IPv6 network interface
through the DHCPv6 protocol. A new command, net_bootp6, is therefore introduced
to serve the purpose. You can think it as DHCPv6/IPv6 version of the existing
net_bootp command.

In addition to that, the UEFI IPv6 PXE support can be easily done by sharing
the same routine with net_bootp6 to parse DHCPv6 Reply packet cached in the
firmware.

I'd like to know any comment on this ?

Thanks,
Michael