Re: about the ip header id

From: Vern Paxson (vernat_private)
Date: Mon Dec 14 1998 - 21:39:30 PST

  • Next message: Friedrichs, Oliver: "Re: Microsoft's Network Monitor - Buffer Overrun / Page Fault / V"

    (Note, this hack has been known to Internet measurement folks for a while.)
    
    >  - randomize the id in the same way of tcp seq number
    >    (but without repetitions, I have an idea for a fast
    >    algorithm that may perform this work)
    
    A shuffling algorithm can do this using a single pass through an array.
    
    >  - use distinct counters for each dest ip.
    >    (I don't think it's such so good idea)
    
    Yep, Solaris does that, maybe some others too.
    
    >  p.s. does somebody know why win* ip stack increase its id by 256?
    >       this solution can prevent the problem but may create others.
    
    It's doing the increment little-endian instead of big-endian.
    
                    Vern
    



    This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 14:24:56 PDT