On Wednesday 20 April 2005 05:12 am, Hrvoje Niksic wrote:
> Mauro Tortonesi <[EMAIL PROTECTED]> writes:
> > well, to defend myself, i have to say that nc6 handles the -4 and -6
> > switches by simply setting the ai_family member of the hints struct
> > to be passed to getaddrinfo to PF_INET6 and PF_INET respectively,
> > instead of the PF_UNSPEC default. so, the behaviour of -4 and -6
> > switches with numeric addresses in nc6 is just a byproduct of this
> > simple assignement. ;-)
>
> But so does Wget! Take a look at the code:
>
> if (opt.ipv4_only)
> hints.ai_family = AF_INET;
> else if (opt.ipv6_only)
> hints.ai_family = AF_INET6;
> else
> {
> hints.ai_family = AF_UNSPEC;
> hints.ai_flags |= AI_ADDRCONFIG;
> }
>
> That's why I am surprised at the different behavior.
sorry, i forgot to tell you that when the -6 switch is used, nc6 also sets the
IPV6_V6ONLY option for the PF_INET6 socket used in the communication. that's
why IPv4-compatible addresses are rejected.
--
Aequam memento rebus in arduis servare mentem...
Mauro Tortonesi
University of Ferrara - Dept. of Eng. http://www.ing.unife.it
Institute of Human & Machine Cognition http://www.ihmc.us
Deep Space 6 - IPv6 for Linux http://www.deepspace6.net
Ferrara Linux User Group http://www.ferrara.linux.it
