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Re: [lwip-users] DNS host not resolving using lwip_gethostbyname functio

From: Sergio R. Caprile
Subject: Re: [lwip-users] DNS host not resolving using lwip_gethostbyname function using ppp over serial
Date: Mon, 02 Mar 2015 15:18:28 -0300
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

On the log, you have this

dns_check_entry: "www.google.com": timeout

lwip_gethostbyname(www.google.com) failed, err=-6

Since I seem to have nothing more interesting to do today, I googled
this for you. I've found an answer from Simon from 2011, some guy had
this very same problem.

Yes, you have a timeout, either the DNS server response is not arriving
(in time) or your question is getting lost, or your system is trashed
and you are not asking properly/missing data/trashing data.

I already explained to you what a developer should do to solve your
case. If I were you, I would follow one of them at least.
Find a way to dump your IP traffic so you can at least reduce some of
the uncertainties.


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