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#!/usr/bin/env python3
import ipaddress
import argparse
parser = argparse.ArgumentParser(description="Generate NAT plugin config.")
parser.add_argument(
"static_map_num", metavar="N", type=int, nargs=1, help="number of static mappings"
)
args = parser.parse_args()
file_name = "nat_static_%s" % (args.static_map_num[0])
outfile = open(file_name, "w")
outfile.write("set int ip address TenGigabitEthernet4/0/0 172.16.2.1/24\n")
outfile.write("set int ip address TenGigabitEthernet4/0/1 173.16.1.1/24\n")
outfile.write("set int state TenGigabitEthernet4/0/0 up\n")
outfile.write("set int state TenGigabitEthernet4/0/1 up\n")
outfile.write("ip route add 2.2.0.0/16 via 173.16.1.2 TenGigabitEthernet4/0/1\n")
outfile.write("ip route add 10.0.0.0/24 via 172.16.2.2 TenGigabitEthernet4/0/0\n")
outfile.write("set int nat44 in TenGigabitEthernet4/0/0 out TenGigabitEthernet4/0/1\n")
for i in range(0, args.static_map_num[0]):
local = str(ipaddress.IPv4Address("10.0.0.3") + i)
external = str(ipaddress.IPv4Address("173.16.1.3") + i)
outfile.write("nat44 add static mapping local %s external %s\n" % (local, external))
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