started on python wrapper to add clients.

tools/add_client.py

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+#!/usr/bin/env python
+
+from argparse import ArgumentParser
+from pprint import pprint as pp
+
+import iptc
+
+parser = ArgumentParser()
+
+parser.add_argument('--chain', required=True)
+parser.add_argument('--protocol', required=True)
+parser.add_argument('--src-ip', required=True)
+
+args = parser.parse_args()
+
+table = iptc.Table(iptc.Table.MANGLE)
+chain = iptc.Chain(table, args.chain)
+
+# Check if rule exists
+for rule in chain.rules:
+    src_ip = rule.src
+    if src_ip.startswith(args.src_ip):
+        print('Rule exists')
+        break
+else:
+    rule = iptc.Rule()
+    rule.src = args.src_ip
+    rule.protocol = args.protocol
+    rule.target = iptc.Target(rule, 'RETURN')
+    chain.insert_rule(rule)