[pox-dev] IP-IP Encap Decap

[Alex Nelson]

Hi,

I want to implement an IP-IP encapsulation/decapsulation scenarion. For the encap part, I create an Ethernet frame as well as an IPv4 datagram and I encapsulate in its payload the received packet:

tmp = ethernet(src=EthAddr("00:00:00:00:00:20"), dst=EthAddr("00:00:00:00:00:21"),
                                          type=ethernet.IP_TYPE,
                                          payload=ipv4(srcip=source, dstip=destination,
                                                       protocol=ipv4.IPv4,
                                                       payload=packet.next))

However, how can I reverse the process, remove the header and get they old IP packet back?
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