In article <47130EB9.3090405@xxxxxxxxx> you wrote: > IPV6_V6ONLY This setsockopt() is used to avoid a listening to IPv4 connects with a socket which is bound to the IPv6 ANY Address :: Its part of the Dual Socket API. Gruss Bernd - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html