This is unusual, because no where in code for central does it send such a packet. I wonder, are you making sure you listen on a single IP for replys? I had a similar issue with Central until i bound it to a single IP. This is outgoing traffic, its coming FROM bw.krslynx.com. Alright, hopefully things will go well this time. Your script is doing something weird, I noticed I have the same traffic problem with Central. was spamming up to 3MB/s of udp at drpepper. I think its leaving a connection open, and then reusing the connection in some strange way, creating a loop, which causes the directory server to spam back data. which then causes your script to spam data back, which triggers this process again It might be your not creating a new socket every time you connect, so its using the same port number. But this is a total guess. Its interesting that both Central and snrrrubs dir server suffer from the same problem, it suggests we've both implemented ss protocol pretty well I've since patched Central to guard against this kind of problem today. Essentially any connection over 60 seconds is forcefully killed, eliminating the chance of a connection loop occuring