This read-only object identifies the pseudo-wire peer IP address type, governing how ccl2vpnPWPeerIPAddress should be interpreted. It simply tells a management station whether the peer address should be parsed as IPv4 or IPv6, which matters because getting the type wrong when interpreting the raw address bytes would produce a nonsensical or entirely wrong peer address. A value of ipv6 here means the bytes in ccl2vpnPWPeerIPAddress must be read as a full 16-byte IPv6 address rather than a 4-byte IPv4 one.