I switched to beta 2.45 because of the increasing amount of ICMP type 8 (echo) packet filtering/limiting on the net. The ability to configure PingPlotter to use UDP (UNIX Style) packet is good, but there is another limitation (i think). UNIX traceroute launchs UDP probe packets with a small ttl then listens for an ICMP type 11 (time exceeded) reply. I presume that's what beta 2.45 configured for "UNIX style" packet type is doing - am I right?
The problem I'm seeing (I think) is domains that are now apparently filtering ICMP type 11 packets at the edge. I'm not complain about pingplotter, just about the state of the net.