[Swan-commit] Changes to ref refs/heads/main

[Andrew Cagney]

New commits:
commit cc045076885ee1f7eab1ac8fbb9c88187961bc01
Author: Andrew Cagney <cagney at gnu.org>
Date:   Wed Jun 24 22:19:01 2020 -0400

    nat: when only one {left,right}ikeport, default other end to 4500 and not 500
    
    For {left,right}ikeport to work wth NAT it must enable espinudp,
    and that means all incomming messages on that port must include
    the ESP=0 prefix, and that means anything but port 500 (because
    an exchange with port 500 never has ESP=0 prefix added).