[H-GEN] Stopping nameserver lookup for local subnet

John Ryland jryland at trolltech.com
Tue Feb 13 22:41:06 EST 2001


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I think you may need to add your localdomain in to the search pattern in 
/etc/resolv.conf, but I'm not 100% on this.
Run 'man /etc/reolv.conf' to get some more info

Hope this helps

Regards
John



On Wednesday 14 February 2001 13:21, Matthew Sellers wrote:
> [ Humbug *General* list - semi-serious discussions about Humbug and  ]
> [ Unix-related topics.  Please observe the list's charter.           ]
> [ Worthwhile understanding: http://www.humbug.org.au/netiquette.html ]
>
> I have set up a household network being masqueraded onto the internet
> through a redhat 6.1 box. The network works fine except that if I try to
> access the machines on the local network by hostname then the host will
> always query my ISP name server before querying my local hosts file. Thus
> causing a delay of 10 to 15 seconds.
>
> from /etc/hosts (192.168.105.128)
> 127.0.0.1       dorfl.discworld dorfl localhost
> 192.168.105.38  luggage.discworld luggage
>
> from /etc/host.conf (192.168.105.128)
> order hosts,bind
> multi off
>
> I thought that this should prevent nameserver lookups of hosts present
> in /etc/hosts
>
> Does someone know what I am missing?
>
> 139.134.5.51 is my ISP nameserver
> 192.168.105.38 is luggage, the masquerading gateway (RH6.1 Linux 2.2.12-20)
> 192.168.105.128 is my computer (Debian Woody Linux 2.4.0)
>
> This is the network activity from the command
>
> >$telnet luggage
>
> from ethereal
> No. Time        Source            Destination      Protocol Info
>  1 0.000000    192.168.105.128   139.134.5.51       DNS     Standard query
> AAAA luggage 2 0.000541    192.168.105.38    192.168.105.128    ICMP   
> Destination unreachable 3 5.007300    192.168.105.128   139.134.5.51      
> DNS     Standard query AAAA luggage 4 5.007779    192.168.105.38   
> 192.168.105.128    ICMP    Destination unreachable 5 10.020635  
> 192.168.105.128   192.168.105.38     TCP     1124 > 23 [SYN] Seq=3319157000
> Ack=0 Win=5840 Len=0 6 10.021094   192.168.105.38    192.168.105.128    TCP
>     23 > 1124 [SYN, ACK] Seq=3795318121 Ack=3319157001 Win=321 20 Len=0
>  7 10.021235   192.168.105.128   192.168.105.38     TCP     1124 > 23 [ACK]
> Seq=3319157001 Ack=3795318122 Win=5840 Len =0
>  8 10.024069   192.168.105.128   192.168.105.38     TELNET  Telnet Data ...
>  9 10.024524   192.168.105.38    192.168.105.128    TCP     23 > 1124 [ACK]
> Seq=3795318122 Ack=3319157025 Win=32120 Le n=0
> 10 10.033359   192.168.105.38    192.168.105.128    TELNET  Telnet Data ...
> 11 10.033484   192.168.105.128   192.168.105.38     TCP     1124 > 23 [ACK]
> Seq=3319157025 Ack=3795318134 Win=5840 Len =0
> 12 10.033914   192.168.105.38    192.168.105.128    TELNET  Telnet Data ...
> 13 10.033986   192.168.105.128   192.168.105.38     TCP     1124 > 23 [ACK]
> Seq=3319157025 Ack=3795318149 Win=5840 Len =0
> 14 10.065130   192.168.105.128   192.168.105.38     TELNET  Telnet Data ...
> 15 10.065608   192.168.105.38    192.168.105.128    TELNET  Telnet Data ...
> 16 10.100869   192.168.105.128   192.168.105.38     TCP     1124 > 23 [ACK]
> Seq=3319157037 Ack=3795318167 Win=5840 Len =0
> 17 10.204758   192.168.105.128   192.168.105.38     TELNET  Telnet Data ...
> 18 10.205910   192.168.105.38    192.168.105.128    TELNET  Telnet Data ...
> 19 10.206346   192.168.105.128   192.168.105.38     TCP     1124 > 23 [ACK]
> Seq=3319157071 Ack=3795318170 Win=5840 Len =0
> 20 10.206587   192.168.105.128   192.168.105.38     TELNET  Telnet Data ...
> 21 10.218308   192.168.105.38    192.168.105.128    TELNET  Telnet Data ...
> 22 10.218976   192.168.105.128   192.168.105.38     TELNET  Telnet Data ...
> 23 10.219409   192.168.105.38    192.168.105.128    TELNET  Telnet Data ...
> 24 10.257014   192.168.105.128   192.168.105.38     TCP     1124 > 23 [ACK]
> Seq=3319157077 Ack=3795318248 Win=5840 Len =0
>
>
>
>
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