examples/demo.py is broken

[cschlesi]

Running on the VM image yields the following output:

vagrant@vagrant-ubuntu-ocelot:~/netcore/examples$ sudo ./demo.py vagrant
[INFO : 2013-01-15 14:31:51 EST : nettle] could not accept switch switch broke connection
[NOTICE : 2013-01-15 14:31:53 EST : controller] switch 1 connected
xterm -e "echo "Ping Connectivity over MAC Learning:"; echo "Ctrl+D to exit"; ping 10.0.0.2 -c 10; bash"
[INFO : 2013-01-15 14:31:55 EST : nettle] could not accept switch switch broke connection
[NOTICE : 2013-01-15 14:31:56 EST : controller] switch 1 connected
xterm -e "echo "ARP caching using MAC Learning for connectivity"; echo "Ctrl+D to exit"; echo "Unfortunately, arping doesn't work on mininet."; arp -n; echo "At first, ping uses regular ARP over the MAC learning:"; ping 10.0.0.2 -c 1; arp -n; echo "But if we clear the ARP table, we get a reply from the controller:"; arp -d 10.0.0.2; arp -n; ping 10.0.0.2 -c 1; bash"
[INFO : 2013-01-15 14:31:56 EST : ARP] Got new routing policy for ARP
[INFO : 2013-01-15 14:31:58 EST : nettle] could not accept switch switch broke connection
[NOTICE : 2013-01-15 14:31:59 EST : controller] switch 1 connected
xterm -e "echo "Pings get blocked when at high frequency,"; echo "Ctrl+D to exit"; echo "# ping 10.0.0.2-i 0.1 -c 50 -q"; ping 10.0.0.2 -i 0.1 -c 50 -q; echo "but SSH still works because it's on a different slice."; echo "(but do give it a moment...)"; echo "# ssh vagrant@10.0.0.2"; ssh vagrant@10.0.0.2; bash"
xterm -e "echo "SSH Daemon on the other host"; echo "Ctrl+D to exit"; $(which sshd) -d; bash"