Hmm, the default(?) is 1500 - MTU=500 is way too low for normal usage.

since zd1211rw is also a mac80211 driver, can you give the pid modprobe.conf a 
try to see if it helps? See http://bugzilla.kernel.org/show_bug.cgi?id=14168

--- On Sat, 13/2/10, Ernst J. Oud <ernst...@euronet.nl> wrote:
  
> L.S.
>  
> I am running Slackware 13.0 (kernel 2.6.32) on an RDC
> (=i486 compatible) 
> small embedded system and using a ZD1211b usb stick for
> wlan (client) access 
> using the standard zd1211rw (module). Firmware version is
> 1.4
>  
> This works fine as long as I specify an MTU
> smaller than 500 for 
> wlan0.
>  
> With a larger MTU the connection aborts when sending
> larger amounts of 
> information, for instance in a telnet session doing an ls
> of a large directory. 
> I can log in and I can do an ls on a small
> directory...
>  
> This is not an USB WLAN stick problem; I tried three
> separate sticks from 
> different vendors and they all exhibit this problem.
>  
> With an MTU of say 448, wlan speed is half of what it
> could be so any help 
> would be appreciated.
>  
> TIA
>  
> Ernst



      

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