Re: IPv6 causing wget/curl to hang for a long time?

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On Sun, Jun 5, 2011 at 12:36 PM, Oon-Ee Ng <ngoonee.talk@xxxxxxxxx> wrote:
> I use the following line to get my current external IP in conky.
> Recently Its been hanging for ages before responding, so I tried it
> out and it seems to try an ipv6 address first before timing out and
> succeeding on the ipv4 address. I know I can just disable ipv6, but
> since on June 8th (AFAICR) there's gonna be a large scale test of that
> on the interwebz, probably a good thing to keep around. Any
> suggestions what the problem could be? Is it simply a faulty DNS
> server (I'm using my local ISP's DNS)?
>
>  wget -O -i icanhazip.com
> --2011-06-05 18:28:04--  http://icanhazip.com/
> Resolving icanhazip.com... 2001:470:1f10:d57:feed:beef:cafe:d00d, 50.56.84.181
> Connecting to icanhazip.com|2001:470:1f10:d57:feed:beef:cafe:d00d|:80...
> failed: Connection timed out.
> Connecting to icanhazip.com|50.56.84.181|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 16 [text/plain]
> Saving to: “-i”
>
> 100%[====================================================================================================================>]
> 16          --.-K/s   in 0s
>

For it to even try connecting to IPv6 addresses, your computer would
have to have routes set up for them. Now, the question is where do
these routes come from?

If they're added by autoconfiguration, there's something in your
network advertising itself as a IPv6 router, but it's not actually
functional. That's where the problem lies, then.


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