Initial commit
Allow disabling/enabling MPTCP on an interface

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>

Conflicts:

	man/man8/ip-link.8
add MPTCP backup capabilities

Signed-off-by: Gregory Detal <gregory.detal@uclouvain.be>
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
MPTCP: support handover-flag

The handover-flag will not allow the creation of subflows across the
specified interface, as long as other interfaces are available.

As soon as no other interface is available, MPTCP will establish a new
subflow over this interface.

This is the break-before-make scenario.

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Build fix

Change-Id: Iad5120476ef57e4865e5560e4fbbf9e3753d3b9c
Signed-off-by: Gregory Detal <gregory.detal@uclouvain.be>

Conflicts:

	ip/ipaddress.c
Update README.md