Re: wu-ftp - name resolution and delay - dns-lookup

I find out how to avoid wu-ftpd doing dns lookup as rfs advice it
it happen at compile time with ./configure :
<<
myhost:/usr/src/wu-ftpd# ./configure --help | grep dns
  --disable-dnsretry      don't retry failed DNS lookups
  --disable-dns           skip all DNS lookups
 >>

if not disable at compile time, you can't modify this behavior throught 
the ftpaccess file.

hth


Stephane Bentebba wrote:

> hi all
>
> someone could help me in a wu-ftpd specificity : name resolution
>
> when i try to connect on my wu-ftp server
> i get big delay :
>    ste@quarantaine:~$ ftp jpl
>    Connected to jpl.
> --- big delay
>    421 Service not available, remote server timed out. Connection closed
>
> with tcpdump -i eth0 | grep -v ssh
> i can see PTR request :
>    15:11:52.552377 10.10.10.17.2083 > 194.2.0.50.domain:  39636+ PTR? 
> 49.200.9.192.in-addr.arpa. (43)
>
> wu-ftp try to get the name that goes with the adress 192.9.200.49
>
> when i move a line in nsswitch.conf to remove dns in host line
> i get better delay : i can connect ,but the delay is still here
>
> when i rip off name servers from the /ets/resolv.conf file
> i get no delay as i expect it
>
> I would like to know how I could make wu-ftp not trying to resolve the 
> name (as i don't care)
> without deactivating all the name resolution process widely (nsswitch 
> and resolv)
>
> thank you much in advance
>
>
>
>
>
>

-- 
*Stéphane Bentebba
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