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nat.py

#!/usr/bin/env python

"""

Example to create a Mininet topology and connect it to the internet via NAT

"""

from mininet.cli import CLI

from mininet.log import lg, info

from mininet.topolib import TreeNet

if __name__ == '__main__':

lg.setLogLevel( 'info')

net = TreeNet( depth=1, fanout=4, waitConnected=True )

# Add NAT connectivity

net.addNAT().configDefault()

net.start()

info( "*** Hosts are running and should have internet connectivity\n" )

info( "*** Type 'exit' or control-D to shut down network\n" )

CLI( net )

# Shut down NAT

net.stop()