'Keep the FILO OrderedDict of frag loads from getting too large
3 points of limit:
Number of ip_ports < 50
Number of acks per ip:port < 25
Number of chars in load < 5000'

def frag_remover(self, ack, load):

    global pkt_frag_loads
    while (len(pkt_frag_loads) > 50):
        pkt_frag_loads.popitem(last=False)
    copy_pkt_frag_loads = copy.deepcopy(pkt_frag_loads)
    for ip_port in copy_pkt_frag_loads:
        if (len(copy_pkt_frag_loads[ip_port]) > 0):
            while (len(copy_pkt_frag_loads[ip_port]) > 25):
                pkt_frag_loads[ip_port].popitem(last=False)
    copy_pkt_frag_loads = copy.deepcopy(pkt_frag_loads)
    for ip_port in copy_pkt_frag_loads:
        for ack in copy_pkt_frag_loads[ip_port]:
            if (len(copy_pkt_frag_loads[ip_port][ack]) > 5000):
                pkt_frag_loads[ip_port][ack] = pkt_frag_loads[ip_port][ack][(-200):]
