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python-iptables how to specify multi argument matches

How do I specify multi-argument matches with python-iptables?

For example, the following iptables command:

-A INPUT -s 1.1.1.1 -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -j DROP

If I create the following:

import iptc
rule = iptc.Rule()
rule.src = '1.1.1.1'
rule.protocol = 'tcp'
t = rule.create_target('DROP')
m = rule.create_match('tcp')
m.tcp_flags = 'FIN,SYN,RST,ACK SYN'

it will complain:

ValueError: invalid value FIN,SYN,RST,ACK SYN

PS: I know that for my particular example, I can simply use m.syn = '1', but I'm trying to generalize on how to specify multi-argument matches.

bash script excutes multiple iptables chain

I am using the script below to apply iptables by filtering IP from the whitelist.txt file.

if I have more than one IP in the list, my iptables is showing multiple chains:

#!/bin/bash

# allowed ip file location
WHITELIST=/usr/src/firewall/whitelist.txt
#
## Specify where IP Tables is located
#

IPTABLES=/sbin/iptables
IPTABLES_SAVE=/sbin/iptables-save

#
## Save current iptables running configuration in case we want to revert back
##  To restore using our example we would run "/sbin/iptables-restore < /usr/src/iptables.last"
#
$IPTABLES_SAVE > /usr/src/iptables.last
#
## Clear current rules
#
##If current INPUT policy is set to DROP we will be locked out once we flush the rules
## so we must first ensure it is set to ACCEPT.
#
$IPTABLES -P INPUT ACCEPT
echo 'Setting default INPUT policy to ACCEPT'

$IPTABLES -F
echo 'Clearing Tables F'
$IPTABLES -X
echo 'Clearing Tables X'
$IPTABLES -Z
echo 'Clearing Tables Z'

#Always allow localhost.
echo 'Allowing Localhost'
$IPTABLES -A INPUT -s 127.0.0.1 -j ACCEPT

#
## Whitelist
#

for x in `grep -v ^# $WHITELIST | awk '{print $1}'`; do
echo "Permitting $x..."
# $IPTABLES -A INPUT -s $x -j ACCEPT
$IPTABLES -A INPUT -p tcp --dport 22 -j ACCEPT
$IPTABLES -A INPUT -p tcp -m tcp -s "$x" --dport 80 -j ACCEPT
$IPTABLES -A INPUT -p udp -m udp -s "$x" --dport 5060 -j ACCEPT
done

# block all other traffice

$IPTABLES -A INPUT -p all -j DROP
#
## Save the rules so they are persistent on reboot.
#
/etc/init.d/iptables save

And my iptables -L -n output shows as

firewall]# iptables -L -n
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  127.0.0.1            0.0.0.0/0
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:22
ACCEPT     tcp  --  192.168.1.125        0.0.0.0/0           tcp dpt:80
ACCEPT     udp  --  192.168.1.125        0.0.0.0/0           udp dpt:5060
ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:22
ACCEPT     tcp  --  192.168.1.1          0.0.0.0/0           tcp dpt:80
ACCEPT     udp  --  192.168.1.1          0.0.0.0/0           udp dpt:5060
DROP       all  --  0.0.0.0/0            0.0.0.0/0

Chain FORWARD (policy DROP)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

How to avoid duplicates, whats wrong in that script....