In the Aug. 98 survey, hosts which could not be identified were reprocessed with a prolonged time window for answers coming from these hosts. Through this measure, the rate of unknown hosts could be reduced from 12% to 3%. It also showed that some operating systems shined up way out of proportion among the 'late packet resenders':

  • Solaris -58% less late packet resenders (lpr) than average.

  • AIX -32% lpr

  • Digital -25% lpr

  • HPUX -22.% lpr

  • Linux -17% lpr

  • Mac/Apple -5% lpr

  • IRIX -3.% lpr

  • BSD -1% lpr

  • SCO +30% lpr

  • Windows95/98/NT +68% lpr



The July '98 results now were corrected under the assumption, that the different operating systems had showed the same behaviour in July '98 as in August '98. An assumption which seems reasonable. This correction changed the July '98 results as following:

  • Linux from 28.2% to 27.7% server presence

  • BSD unchanged (rank 2 -> 3)

  • Windows95/98/NT from 22.3% to 23.9% (rank 3 -> 2)

  • Solaris from 15.2% to 14.3%

  • HPUX from 1.1% to 1.0%

  • Rest of operating systems less than 0.1% change in presence.