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Old 11-24-2010, 09:16 AM   #1
kenneho
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Registered: May 2003
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"nc -v somehost.example.com 22" returns "nc: getaddrinfo: Name or service not known"


Hi.


I have this issue: "nc -v <ip-address> 22" works fine, but "nc -v <fqdn> 22" fails with error message "nc: getaddrinfo: Name or service not known". However, "host <fqdn>" works fine, so name resolution works. So I have a working name resolution, but nc (netcat) doesn't seems to be using it or something. Same kind of issue with "ping <fqdn>".

Does anyone know how come name resolution works, but utilities such as nc and ping doesn't?


- kenneho
 
Old 11-24-2010, 09:32 AM   #2
AlucardZero
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Open /etc/nsswitch.conf. Make sure the hosts line has "dns" in it. e.g.:
Code:
hosts:      files dns
 
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Old 11-25-2010, 01:58 AM   #3
kenneho
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Quote:
Originally Posted by AlucardZero View Post
Open /etc/nsswitch.conf. Make sure the hosts line has "dns" in it. e.g.:
Code:
hosts:      files dns
Thanks for your reply. I got it working now, by replacing the line "hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4" with "hosts: files dns". Seems like the mdns4_minimal thing breaks name resolving, but I'm not quite sure what this mdns4 thing is. Semes to have something to do with multicast DNS, which again I'm not quite sure what actually does.
 
  


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