The CommuniGate Pro Server provides full support for both IPv4 and IPv6 network protocols for the following Server Operating Systems:
If the Server runs on a platform with IPv6 support, and it detects any local IPv6 address, it assumes that the IPv6 networking is enabled. In this case, the Server creates all network sockets as IPv6 sockets. These sockets communicate with IPv4 systems using the IPv4-mapped IPv6 address method.
Note: The IPv4-mapped IPv6 address method is disabled by default in FreeBSD and NetBSD system kernels. Use the
sysctl -w net.inet6.ipv6.v6only=0
command in your OS startup scripts to enable this method.
Note: The IPv4-mapped IPv6 address method is permanently disabled in OpenBSD system kernels. As a result, IPv6 networking is not supported on this platform.
You can explicitly instruct the Server to switch IPv6 networking support on or off by using the --IPv6 Command Line Options