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scapy showing error with pypy

I've installed pypy and installed scapy for pypy. In pypy website scapy is listed as compatible module. But when I tried this,

>>>> from scapy.all import *
>>>> sendp(Ether()/IP(dst='172.16.0.2'))

It gave an error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/pypy-2.2.1/site-packages/scapy/sendrecv.py", line 255, in sendp
    __gen_send(conf.L2socket(iface=iface, *args, **kargs), x, inter=inter, loop=loop, count=count, verbose=verbose, realtime=realtime)
  File "/usr/lib64/pypy-2.2.1/site-packages/scapy/arch/linux.py", line 414, in __init__
    self.ins.bind((iface, type))
  File "<string>", line 1, in bind
error: unknown address family

Then I googled it, and tried to do the same following this link:

>>>> from scapy.layers.inet import IP, Ether
>>>> from scapy.sendrecv import sendp
>>>> sendp(IP(dst='172.16.0.2'))

I still get the exact same error. I thought may be with sendp() some error might be there. so I tried the exact code mentioned in that link:

>>>> from scapy.layers.inet import IP
>>>> from scapy.sendrecv import send
>>>> send(IP(dst='172.16.0.2'))

No doubt it's not a success, but the error message changes completely saying:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/pypy-2.2.1/site-packages/scapy/sendrecv.py", line 247, in send
    __gen_send(conf.L3socket(*args, **kargs), x, inter=inter, loop=loop, count=count,verbose=verbose, realtime=realtime)
  File "/usr/lib64/pypy-2.2.1/site-packages/scapy/sendrecv.py", line 230, in __gen_send
    s.send(p)
  File "/usr/lib64/pypy-2.2.1/site-packages/scapy/arch/linux.py", line 372, in send
    iff,a,gw  = x.route()
  File "/usr/lib64/pypy-2.2.1/site-packages/scapy/layers/inet.py", line 358, in route
    return conf.route.route(dst)
AttributeError: 'NoneType' object has no attribute 'route'

Can anybody help me how to work around scapy in pypy? I've my code in python which sniffs a packet from pcap file, modifies few fields in the packet and sends it. Which runs completely fine except the 10ms time it takes which is quite long. I thought of trying to make it less using pypy. But I can't find any solution to the above errors.

Updated: (After testing for address family)

I couldn't find a way to check with pdb. but I checked by taking other IP addresses:

p=Ether()/IP(src='127.0.0.1', dst='172.16.0.2') was showing "unkown address family" error for even p.show().

But p=Ether()/IP(src='127.0.0.1', dst='127.0.0.1') is showing the packet details with p.show() but showing same error with send() or sendp().

Solution

  • Fixed in PyPy. If this were a bug report I would close it. :-)

    The closed bug report is https://bitbucket.org/pypy/pypy/issue/1090/cant-bind-packet-socket.