[Ns-bugs] [Bug 161] Link layer pcap tracing is broken for tcp-large-transfer

bugzilla-daemon@nsnam-www.ece.gatech.edu bugzilla-daemon at nsnam-www.ece.gatech.edu
Fri Apr 4 20:28:07 PDT 2008


http://www.nsnam.org/bugzilla/show_bug.cgi?id=161





------- Comment #1 from tomh at tomh.org  2008-04-04 23:28 -------
I have not been able to confirm this-- I just ran:

tcpdump -nn -tt -r tcp-large-transfer-0-1.pcap -vv
reading from file tcp-large-transfer-0-1.pcap, link-type RAW (Raw IP)
0.000000 IP (tos 0x0, ttl  64, id 0, offset 0, flags [none], proto: TCP (6),
length: 40, bad cksum 0 (->61cc)!) 10.1.3.1.49153 > 10.1.2.2.50000: S, cksum
0x0000 (incorrect (-> 0x138c), 0:0(0) win 65535
0.040153 IP (tos 0x0, ttl  63, id 0, offset 0, flags [none], proto: TCP (6),
length: 40, bad cksum 0 (->62cc)!) 10.1.2.2.50000 > 10.1.3.1.49153: S, cksum
0x0000 (incorrect (-> 0x137b), 0:0(0) ack 1 win 65535
0.040153 IP (tos 0x0, ttl  64, id 1, offset 0, flags [none], proto: TCP (6),
length: 40, bad cksum 0 (->61cb)!) 10.1.3.1.49153 > 10.1.2.2.50000: ., cksum
0x0000 (incorrect (-> 0x137c), 1:1(0) ack 1 win 65535 


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