Re: Disabling AAAA dns lookups in NetBSD

[Lloyd Parkes <lloyd%must-have-coffee.gen.nz@localhost>]

On 26/08/2013, at 9:35 PM, David Brownlee <abs%absd.org@localhost> wrote:

> On 26 August 2013 10:29, Lloyd Parkes 
> <lloyd%must-have-coffee.gen.nz@localhost> wrote:
>> 
>> On 26/08/2013, at 9:03 PM, David Brownlee <abs%absd.org@localhost> wrote:
>> 
>>> I'm attempting to use a perl script which calls Mail::IMAPClient to
>>> connect to google (which has both IPv4 and IPv6). Obviously NetBSD
>>> picks up the IPv6 address first, and then fails with "No route to
>>> host".
>>> ...
>>> Short of compiling a custom kernel, how would I do one of the following?
>>> - disable AAAA lookup
>>> - prefer A lookup to AAAA
>>> - disable all IPv6 activity on the system
>> 
>> You could also fix Mail::IMAPClient so that it does the right thing. It is 
>> almost certainly using a library call that returns a list of IP addresses 
>> and the code just needs adjusting to try each IP address until a successful 
>> connection is made. That's what I make my programs do and it is the modern 
>> way of using gethostbyname(3) (in as much as using gethostbyname(3) could be 
>> said to be modern).
> 
> OK, so I'll take a look at fixing Mail::IMAPClient. Would someone like
> to take a look at subversion - which has similar issues...

I was having a quick look at it and it seems to be that the IMAPClient isn't 
passing MultiHomed=>1 to IO::Socket::INET->new(). 

Cheers,
Lloyd