script to summarize source info in conntrack output

conntrack_stats.py

#!/usr/bin/env python3

import collections
import fileinput
import operator
import sys

sources = collections.defaultdict(int)

for line in fileinput.input(sys.argv[1:]):
    parts = line.split()
    for p in parts:
        if p.startswith('src='):
            sources[p] += 1
            break

for src, count in reversed(sorted(sources.items(), key=operator.itemgetter(1))):
    print(f'{count:6} {src}')