Introducing the SCAPY_USE_PCAPDNET environment variable

Bluetooth: add EIR / BLE Advertising packet classes

* PacketList.conversations(): include ARP packets by default

* PacketList.conversations(): accept a label instead of counting

* PacketList.conversations(): display the label in the graph

Python 2.5: fallback implementation for gcd() without pycrypto

This was reported by @AmedeoSapio in #68

Fix Issue #115

scapy/arch refactoring

Replacing | with or

Useless line break

Fix TCP & UDP checksums when IP layer has options

Don't use /bin/bash in run_tests

Issue #110 fixes

Accept SCAPY_HISTFILE env var to set scapy hitory file (fixes #103)

python --version may output to stderr (fixes #101)

Reported by Runa Barik on Scapy ML.

Sniff can accept a list of interfaces (+ fixed bug)

Move get_if() to scapy/arch/common.py

Pad packet when needed

Update IANA Router Alert Options

Signed-off-by: Walinton Cambronero <walinton.cambronero@hpe.com>

Add section about "contributions wanted"

Sniff() optionally accepts an interface or a list of interfaces

Added "direction" attribute to pkt when received by L2ListenSocket

Patch PEP08'ified

Do not force to print interface

Updated usage.rst with multi-interfaces sniffing

Fixed missing pic in usage.rst

tethereal -> tshark

fix unicode problem for IPField

Update scripts to call python2 instead of python