[Swan] libreswan 3.20 does NOT listen on UDP port 4500 for IPv6

[Hao Chen]

Hi All:

I am working on "IPsec behind NAT" for IPv6.

For IPv4, "pluto" listen on 4500 after start up. But for IPv6, "pluto" does NOT listen on it.....
But, for UDP port 500, "pluto" listen on IPv6 after startup....

How to let "libreswan" listen on 4500 for IPv6?

Thanks


[root at CentOS7 ~]# netstat -na | grep 500
udp        0      0 127.0.0.1:4500          0.0.0.0:*
udp        0      0 10.0.2.15:4500          0.0.0.0:*
udp        0      0 192.168.122.1:4500      0.0.0.0:*
udp        0      0 127.0.0.1:500           0.0.0.0:*
udp        0      0 10.0.2.15:500           0.0.0.0:*
udp        0      0 192.168.122.1:500       0.0.0.0:*
udp6       0      0 ::1:500                 :::*
unix  3      [ ]         STREAM     CONNECTED     15004
unix  3      [ ]         STREAM     CONNECTED     15003
unix  3      [ ]         STREAM     CONNECTED     26500
[root at CentOS7 ~]#



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