>   
   > > I have two linux machines (A and B) connected to same link   
   >   
   > > (ethernet). The MTU supported is 1500.   
   >   
   >   
   >   
   > > If I change the mtu to 1280 of one the host (say B), then can I send   
   >   
   >   
   >   
   > My take on this is: you cannot really change the MTU on an interface   
   >   
   > -- you can only tell the interface the actual MTU on the link.   
   >   
   > If you lie to it, anything can happen.  Or, rather, I assume anything   
   >   
   > can happen.   
   >   
   >   
   >   
   > So I wouldn't set the MTU to X unless I could be sure all other hosts   
   >   
   > were set to X too, and that X is in fact supported by the medium.   
   >   
   >   
   >   
   > Are you doing this out of curiosity, or are you trying to solve a   
   >   
   > problem?   
   >   
   >   
   Thanks for your reply. I am just doing it out of curiosity. I am trying to   
   understand how path mtu discovery works.   
      
   Can we have two hosts with different mtu connected to the same link ? Ethernet   
   supports both 1500 and jumbo frames (9000). So, can we have one host with mtu   
   = 1500 and other with mtu = 9000 on the same link.   
   If yes, what would be the pmtu for the path between these nodes ?   
   Can node A find the mtu of node B on the same link ?   
      
   thanks for any help in advance.   
      
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