Re: ipv6 scope id support

[orc <orc@sibserver.ru>]

10 июня 2014 г. 2:53:37 KRAT, Rich Felker <dalias@libc.org> пишет:
>On Mon, Jun 09, 2014 at 10:35:39PM +0800, orc wrote:
>> Hi list!
>> Great to see major changes towards dns code cleanup and rewrite! Here
>another one:
>> As I understand, this is a feature when you can specify destination
>link-local address and from which interface packets are sent. The
>address and interface are both specified, being separated by '%' (for
>example, ff02::1%eth0)
>> I've grepped into glibc sources and found that this step is performed
>somewhere in dns resolver.
>> 
>> Does musl support this? My current attempt to use it failed.
>
>Can you explain what you did that failed? getaddrinfo should always
>accept %nnnn (numeric scope_id) following a numeric address string,
>and accepts %ifname if the address has link-local scope (as determined
>by IN6_IS_ADDR_LINKLOCAL || IN6_IS_ADDR_MC_LINKLOCAL). Likewise,
>getnameinfo will reverse the scope_id to an interface name only fork
>link-local addresses, and the reversal can be inhibited with the
>NI_NUMERICSCOPE flag.
>
>For non-numeric addresses, scope_id is not parsed at all, but entries
>in /etc/hosts can have a scope_id attached to them.
>
>If any of this logic seems incorrect to you, please explain what you
>think should be changed.

Oh, I am sorry, false alert. I was using 1.0.0 at that time. It lacks this.
And the dns bug will motivate me to upgrade :-)

>
>Rich