knakahara d83c566ff6 Fix unexpected failure when ipsecif(4) over IPv6 is changed port number only.
Here is an example of the operation which causes this problem.
    # ifconfig ipsec0 create link0
    # ifconfig ipsec0 tunnel fc00:1001::2,4500 fc00:1001::1,4501
    # ifconfig ipsec0 tunnel fc00:1001::2,4500 fc00:1001::1,4502
2018-04-06 10:38:53 +00:00
..
2018-03-10 17:52:50 +00:00