Barefoot modified scapy, which supports VXLAN. Waiting for VXLAN support to be
added to the main scapy repo.
This modified repo now also supports a ERSPAN-like header.
To install:
sudo python setup.py install
To check that the modifications work, open a scapy CLI (just type 'scapy' in a
terminal) and type the following:
Welcome to Scapy (2.2.0-dev)
>>> load_contrib('vxlan')
>>> Ether()/IP()/UDP()/VXLAN()/Ether()/IP()/TCP()
<Ether type=0x800 |<IP frag=0 proto=udp |<UDP dport=4789 |<VXLAN |<Ether
type=0x800 |<IP frag=0 proto=tcp |<TCP |>>>>>>>
>>> load_contrib('erspan')
>>> Ether()/IP()/GRE()/ERSPAN()/Ether()/IP()/TCP()
<Ether type=0x800 |<IP frag=0 proto=gre |<GRE proto=0x22eb |<ERSPAN |<Ether
type=0x800 |<IP frag=0 proto=tcp |<TCP |>>>>>>>
>>>
Note how the UDP dport and the GRE proto number are updated automatically.