When defragmentation is performed on a packet set, if all fragments of same payload are not present (last fragment does not have MF flag), packet is wrongly reassembled.
Proposition of modification in defrag function :
after
p = lst[0]
if p.frag > 0: # frame beginning is missing
missfrag.append(lst)
continue
add something like :
lastp = lst[-1] # expected packet still not completely received
if lastp.flags != 0:
missfrag.append(lst)
continue
Concatenation of fragmented packet would also be welcome at the end of the function...
missfrag=reduce(lambda x, y: x + y, missfrag)
missfrag.listname="frags"
return nofrag,defrag2,missfrag
