Counter of the duplicated packets from a pcap file

[salwa17]

@ Gribouillis: Yes I know. I just re-explaining my need regarding your explanation: "Finally, remove the groups with only one packet"

So with your code, I got the whole of packets if I want only the duplicated one I have to check if my [tcp].seq is in this list. Something like this ? are you agree ?

def is_dupl(s):
    v = duplication_pkt_count(s)
    for p in s: 
        if p.haslayer(TCP) and  p.haslayer(IP): 
            for i in range(0, len(v)):
                if p[TCP].seq in v and (p[IP].src == s_ip):
                    sCount += 1
                if p[TCP].seq in v and (p[IP].src == c_ip):
                    cCount += 1
            return 	(sCount, cCount)