XPost: comp.arch.embedded   
   From: gah@ugcs.caltech.edu   
      
   In comp.protocols.tcp-ip Morten Reistad  wrote:   
   (snip)   
      
   > OK, NDP. NDP is what ARP should have been, but for the need to   
   > support what was legacy systems by 1983.   
      
   > Anyway, doing layer 2 mapping before routing is not standards   
   > conformant IP behaviour, matter what OS or IP version you are   
   > using.   
      
   Not having written an actual IP stack, I would think using the   
   ARP cache to speed up routing wouldn't be non-conforming.   
      
   If there is no ARP entry, then you have to go through the usual   
   route algorithm, and the ARP cache better be kept up to date   
   when routes change.   
      
   -- glen   
      
   --- SoupGate-Win32 v1.05   
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