From: mjo@dojo.mi.org   
      
   On 2016-05-30 06:18:29 +0000, Rob Warnock said:   
      
   > Gerald Breuer   wrote:   
   > +---------------   
   > | schrieb Gerald Breuer:   
   > | > Is there a way to see a list for wich ip-addresses the path MTU   
   > | > discovery has learned which MTU? I'm interested in Linux, Windows   
   > | > and OS X.   
   > |   
   > | I got it at least for Windows:   
   > | netsh interface ipv4 show destinationcache   
   > +---------------   
   >   
   > For FreeBSD, it's "netstat -r" (show routes) with the   
   > "-W" suboption added [and you probably want to add "-n"   
   > as well to turn off reverse lookups of IPs, or it'll   
   > be *sloooow*], that is:   
   >   
   >     netstat -rWn   
   >   
   > Since OS X is partially based on FreeBSD, I'd suggest   
   > trying that in a terminal (shell) window and see what   
   > you get.   
      
   netstat -rl is what you want for OS X.   
      
   -Mike   
      
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