I get lots of connection churn to a few hosts. It happens like this:

#tcpdump -nieth1 'tcp[tcpflags] & (tcp-syn|tcp-fin) != 0' and host 195.41.29.4 and 
host 80.140.112.118

22:07:00.733955 80.140.112.118.23232 > 195.41.29.4.2920: F 1413333902:1413333902(0) 
ack 956753482 win 7504 <nop,nop,timestamp 691835708 97229025> (DF)
22:07:00.741964 195.41.29.4.2920 > 80.140.112.118.23232: F 1:1(0) ack 1 win 5840 
<nop,nop,timestamp 97229787 691835708> (DF)
22:07:00.770369 195.41.29.4.2929 > 80.140.112.118.23232: S 968795301:968795301(0) win 
5840 <mss 1460,sackOK,timestamp 97229790 0,nop,wscale 0> (DF)
22:07:00.955731 80.140.112.118.23232 > 195.41.29.4.2929: S 1421425075:1421425075(0) 
ack 968795302 win 5760 <mss 1452,sackOK,timestamp 691835730 97229790,nop,wscale 0> (DF)
22:07:02.121895 80.140.112.118.23232 > 195.41.29.4.2929: F 1:1(0) ack 193 win 6432 
<nop,nop,timestamp 691835847 97229908> (DF)
22:07:02.125459 195.41.29.4.2929 > 80.140.112.118.23232: F 193:193(0) ack 2 win 5840 
<nop,nop,timestamp 97229925 691835847> (DF)
22:07:03.611490 195.41.29.4.2931 > 80.140.112.118.23232: S 981231948:981231948(0) win 
5840 <mss 1460,sackOK,timestamp 97230074 0,nop,wscale 0> (DF)
22:07:03.733962 80.140.112.118.23232 > 195.41.29.4.2931: S 1420180326:1420180326(0) 
ack 981231949 win 5760 <mss 1452,sackOK,timestamp 691836008 97230074,nop,wscale 0> (DF)


And so on and so forth. Notice that the other end closes the connection,
and right after my node opens it again. I don't understand why.


/Benny



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