From: unruh@invalid.ca   
      
   On 2021-08-02, Carlos E. R.  wrote:   
   > On 02/08/2021 02.04, Sidney_Kotic wrote:   
   >> I'm trying to set up a small network of computers.  2 are running 15.3   
   >> and 1 is at 15.1 (yes, it's obsolete just like me).   
   >>   
   >> All of the computers are working with dynamic IP's via WiFi on wlan0.   
   >> What I want to add is a network of static IP's via eth0 and a small switch.   
   >>   
   >> If I change the configuration, via yast, to bring up the eth0 device it   
   >> shuts down the wlan0 (even though both are defined).   
   >   
   > Are you sure the wlan device is switched off? Normally they are both on,   
   > just that the eth0 device gets preference because of a shorter path - if   
   > they are on the same lan. If they are on different lans, the routing   
   > rules decide which one is used for each destination.   
      
   Yes, I would say, look at the routing table to see where it thinks   
   things should be sent to. I suspect that when you brought up eth0, the   
   system assigned it as the route for all packets. Thus wlan0 is up, but   
   nothing is being sent to it.   
      
   Remember that the routing table sends packets on the most specific route   
   that encompasses the address you are sending to, and if two routes are   
   equally specific, then the latest one that brought up.   
      
   route -n   
   or   
   ip route   
      
   Show us the output of those commands after you bring up eth0 and you   
   think wlan0 is shut down.   
      
      
   >   
   >   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)