Bug 1748

Summary:	Bug in flowmonitor with fragmented ip packets
Product:	ns-3	Reporter:	Ville Saarinen <ville.saarinen>
Component:	flow-monitor	Assignee:	Gustavo J. A. M. Carneiro <gjcarneiro>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	ns-bugs, tommaso.pecorella
Priority:	P5
Version:	ns-3.17
Hardware:	All
OS:	All

Description Ville Saarinen 2013-08-08 08:43:27 UTC

Simulation aborts in assert in /network/model/buffer.h at line 680.
The reason for this behaviour seems to be the lacking ipv4 fragmentation support in ipv4-flow-classifier.cc. When a fragmented ip datagram arrives, transport layer header is read in Ipv4FlowClassifier::Classify without any checks about the ip fragmentation. Thus the remaining fragmented data is considered to be a transport layer header, which causes the failing assert if there are less bytes in the fragment than e.g. UDP header size.

Comment 1 Tommaso Pecorella 2013-12-24 10:44:00 UTC


*** This bug has been marked as a duplicate of bug 1802 ***