The BoostPinger is more picky about received packets, because when running in

The BoostPinger is more picky about received packets, because when running in
parallel with other BoostPingers, it could receive echo replies from any host,
leading to things like:
    26 bytes from 209.85.149.104: icmp_seq=1 ttl=54 time=24 ms   <-- pinger A received packet from host A
    26 bytes from 209.85.149.104: icmp_seq=1 ttl=54 time=1999 ms <-- pinger B received packet from host A??
     - Host up: www.postbank.de                                  <-- what? You didn't receive any packet from the host you had ping
     - Stick to the original ping interval: 10s
     - Time elapsed since last ping: 12s                         <-- OK, pinger A parsed the packet from host A
     - Stick to the original ping interval: 5s
     - Time elapsed since last ping: 6s                          <-- WRONG, pinger B should not parse the packet from host A