void silc_net_gethostbyname_async(const char *name,
                                      SilcBool prefer_ipv6,
                                      SilcSchedule schedule,
                                      SilcNetResolveCallback completion,
                                      void *context)

    Asynchronously resolves the IP address of the hostname indicated
    by the `name'.  This function returns immediately, and the
    `completion' callback will be called after the resolving is
    completed.

    If the `prefer_ipv6' is TRUE then this will return IPv6 address if it
    finds.  If FALSE if returns IPv4 address even if it found IPv6
    address also.