Hello Markus!   
      
   12 Aug 2018 16:41, Markus Reschke wrote to Michiel van der Vlist:   
      
    MR> I get 20/20 with a RFC4890 based ICMP filter set.   
      
   not all isps knows that rfcs in detail   
      
   or modem and or router firmware does not care of it   
      
   i am happy with shorewall   
      
      
    Regards Benny   
      
   ... there can only be one way of life, and it works :)   
      
   --- Msged/LNX 6.1.2 (Linux/4.18.0-gentoo (x86_64))   
    * Origin: I will always keep a PC running CPM 3.0 (2:230/0)