I have a Mac running 10.12.4 on which I am trying to configure a tunnel.
The Mac's IP is 47.144.xxx.yyy.
Server IPv4 Address:188.8.131.52
Server IPv6 Address:2001:470:c:XXX::1/64
Client IPv4 Address:184.108.40.206
Client IPv6 Address:2001:470:c:XXX::2/64
I have the following result from ifconfig gif1
gif1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
tunnel inet 47.144.XXX.XXX --> 220.127.116.11
inet6 fe80::3ac9:86ff:XXXX:5da%gif1 prefixlen 64 scopeid 0x12
inet6 2001:470:c:XXX::2 --> 2001:470:c:XXX::1 prefixlen 128
PING6(56=40+8+8 bytes) 2001:470:c:XXX::2 --> 2001:470:c:XXX::2
--- 2001:470:c:XXX::2 ping6 statistics ---
13 packets transmitted, 0 packets received, 100.0% packet loss
I clearly have something configured incorrectly, but I am not sure what to check. On my working FreeBSD 11 box, that ping of the gif IPv6 address works fine.