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Re: Cygwin unable to resolve hostnames
- From: Brian Inglis <Brian dot Inglis at SystematicSw dot ab dot ca>
- To: cygwin at cygwin dot com
- Date: Tue, 16 Feb 2016 09:30:58 +0000 (UTC)
- Subject: Re: Cygwin unable to resolve hostnames
- Authentication-results: sourceware.org; auth=none
- References: <CAPohr29Vzd0N8+WsJHpK1tPHjFf+3rtxWUQAyOFqnCdCLZcMcw at mail dot gmail dot com> <mop2jp$kkn$5 at ger dot gmane dot org> <CAA05WiYNHcfc2oSQiFZpYoGUojA__7hk+62trEo3LuhXK60hQw at mail dot gmail dot com> <CAA3tTg8iqNTZjM3i0kwk4jAANoMvqb-+noEydOJ+ywH+0Ab0TQ at mail dot gmail dot com> <CAA05WibsEf3S+y=e1t-MoAJ=AxkvOWqrFLj5s2-f5Qghb7wFag at mail dot gmail dot com> <20160212090614 dot GA19968 at calimero dot vinschen dot de> <CAA05WiaqKoaRuxTCYmrqOquSPGVO+jO0gLLVhcX1L7N0Tr+hLg at mail dot gmail dot com>
Carl-Erik Kopseng <carlerik <at> gmail.com> writes:
>>> ssh: Could not resolve hostname timbuktu.kopseng.no: Non-recoverable
>>> failure in name resolution
>> I don't think this is a generic Cygwin problem. I can resolve the
>> hostname just fine:
>> $ uname -svr
>> CYGWIN_NT-10.0 2.4.1(0.293/5/3) 2016-01-24 11:26
>> $ ssh timbuktu.kopseng.no
>> The authenticity of host 'timbuktu.kopseng.no (51.175.197.68)' can't be
established.
>> RSA key fingerprint is SHA256:ddcghrb6BI6+TVDKDE3Yf+U43v9EL6u7HsNw7Hec+y8.
>> Are you sure you want to continue connecting (yes/no)? no
>> Host key verification failed.
> I think it has to do with how Cygwin interfaces with VMs. Perhaps it
> has something to do with network tunnelling or something related to
> how ip and DNS works when being NAT'ed through VMWare Fusion.
>
> I am running the Windows 8 VM on VMWare Fusion on OS X 10.11.3
Could it be lack of support for DNSSEC as your domain shows:
$ whois kopseng.no
% Kopibeskyttet, se http://www.norid.no/domenenavnbaser/whois/kopirett.html
% Rights restricted by copyright. See
http://www.norid.no/domenenavnbaser/whois/kopirett.en.html
Domain Information
NORID Handle...............: KOP444D-NORID
Domain Name................: kopseng.no
Domain Holder Handle.......: CK1990P-NORID
Registrar Handle...........: REG42-NORID
Tech-c Handle..............: DH38R-NORID
Name Server Handle.........: NSHY11H-NORID
Name Server Handle.........: NSHY46H-NORID
Name Server Handle.........: NSHY81H-NORID
DNSSEC.....................: Signed
DS Key Tag 1...........: 42355
Algorithm 1...........: 8
Digest Type 1...........: 2
Digest 1...........:
8065b555e0009918e7aba49191e6409481afc702f028c0ff20f1bf27e847e21b
http://dnssec-debugger.verisignlabs.com/timbuktu.kopseng.no shows no issues
with setup.
VMware KB search shows no DNSSEC hits on Fusion, bunch on ESX.
Might want to start with
https://communities.vmware.com/message/1454999#1454999 and the rest of that
thread.
You can browse from there to more generic natd, dhcpd, and net config and
diag info or RTFM.
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