Problem after upgrading to BIND 9

[Rick Jones]

Mark Andrews wrote:
>>Mark Andrews <Mark_Andrews at isc.org> wrote:
>>
>>>You have fixed the symptom but not the problem.  getaddrinfo(),
>>>which telnet should be using, only looks for IPv6 addresses if there
>>>is IPv6 support enabled.  You will have trouble talking to all dual
>>>stack machines unless you find the real cause.
>>
>>Do you mean the AI_ADDRCONFIG flag?  Doesn't that have to be set
>>explicitly by the caller of getaddrinfo() as it is not a default?
> 
> 
> RFC 2553       Basic Socket Interface Extensions for IPv6     March 1999
> 
>    The special flags value of AI_DEFAULT is defined as
> 
>       #define  AI_DEFAULT  (AI_V4MAPPED | AI_ADDRCONFIG)

Interesting.  I find that in an HP-UX 11.11 include file, but not one on 
an Ubuntu Dapper system.

I went looking at the RFC and while the thing is named AI_DEFAULT I 
didn't get the impression that it was meant to be the default if one 
didn't specify any flags:

<excerpt>
    The flags argument specifies the types of addresses that are searched
    for, and the types of addresses that are returned.  We note that a
    special flags value of AI_DEFAULT (defined below) should handle most
    applications.

    That is, porting simple applications to use IPv6 replaces the call

       hptr = gethostbyname(name);

    with

       hptr = getipnodebyname(name, AF_INET6, AI_DEFAULT, &error_num);

</excerpt>

Which suggests it is still an explicit setting of a flag that implicitly 
includes AI_ADDRCONFIG.

rick jones