Hi - many thanks for replying but I'm afraid my problem is on a Windows10
machine, which doesn't have either of those commands afaik.

Also, the machine resolves the DNS aliases fine from everything I use
except pycurl : browsers, ping, curl.exe, etc, etc

On 25 August 2016 at 08:22, Dima Tisnek <dimaqq_at_gmail.com> wrote:

> Run strace and ltrace to figure out why DNS resolution is different.
>
> Check your nsswitch.conf and understand what it does (not easy).
>
> Proceed from there
>
> On 24 Aug 2016 19:52, "Peter Binney via curl-and-python" <
> curl-and-python_at_cool.haxx.se> wrote:
>
>> I started getting this error when running pycurl to a NAS box on my LAN
>> after I moved to another ISP (and hence broadband box):
>> pycurl.error: (6, 'Could not resolve: nas-29-ee-87 (Domain name not
>> found)')
>>
>> Curl does not have the problem when accessing the same URL.
>> Pycurl does not have the problem when accessing URL's on the Internet.
>>
>> I am running on Windows10.
>>
>> pycurl.version shows: PycURL/7.43.0 libcurl/7.47.0 OpenSSL/1.0.2e
>> zlib/1.2.8 c-ares/1.10.0 libssh2/1.6.0
>>
>> # START OF pycurl program that errors
>> import io
>> import pycurl # Currently (Nov 2014) using 7.19.5 against libCurl 7.37
>> import sys
>> url = "http://nas-29-ee-87/" # Change this to "http://www.google.co.uk/"
>> and no problem
>>
>> c = pycurl.Curl()
>> print("fetch(" + url + ") using " + pycurl.version)
>> c.setopt(pycurl.URL, url)
>> c.setopt(pycurl.SSL_VERIFYPEER, False) # equivalent to curl's -k /
>> --insecure
>> c.setopt(pycurl.SSL_VERIFYHOST, False) # equivalent to curl's ????
>> Had to add for NAS access after pyCurl upgrade to 7.21.5 (from 7.19.5)
>>
>> fPointer = io.BytesIO()
>> c.setopt(pycurl.WRITEFUNCTION, fPointer.write)
>> c.perform() # <=== ERRORS ON THIS LINE
>> # END OF pycurl program that errors
>>
>> This curl command runs fine on both my Windows10 and a Ubuntu PC on the
>> same LAN:
>> curl http://nas-29-ee-87/
>>
>>
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>>
>>

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Received on 2016-08-25