Merge branch 'mptcp-ipv4-mapped-ipv6-addressing-for-subflows'

Merge branch 'mptcp-ipv4-mapped-ipv6-addressing-for-subflows'

Mat Martineau says:

====================
MPTCP: IPv4-mapped IPv6 addressing for subflows

This patch series from the MPTCP tree adds support for IPv4-mapped IPv6
addressing that was missing when multiple subflows were first
implemented.

Patches 1 and 2 handle the conversion and comparison of the mapped
addresses.

Patch 3 contains a minor refactor in the path manager's handling of
addresses.

Patches 4 and 5 add selftests for the new functionality and adjust the
selftest timeout.
====================

Link: https://lore.kernel.org/r/20210125185904.6997-1-mathew.j.martineau@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>