运行scapy里的sr（）时，一直报错，像下面那样。，scapysr,Traceback (m

运行scapy里的sr（）时，一直报错，像下面那样。，scapysr,Traceback (m

Traceback (most recent call last):
File "D:\Python27\lib\site-packages\scapy\arch\windows__init__.py", line 374, in sndrcv

pks.send(p)

File "D:\Python27\lib\site-packages\scapy\arch\pcapdnet.py", line 250, in send

ifs = dnet.eth(iff)

File "dnet.pyx", line 112, in dnet.eth.__init__ (./dnet.c:1764)
OSError: No error
INFO: --- Error sending packets
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "D:\Python27\lib\site-packages\scapy\sendrecv.py", line 317, in sr

a,b=sndrcv(s,x,*args,**kargs)

File "D:\Python27\lib\site-packages\scapy\arch\windows__init__.py", line 410, in sndrcv

h = r.hashret()

File "D:\Python27\lib\site-packages\scapy\layers\inet.py", line 371, in hashret

if ( (self.proto == socket.IPPROTO_ICMP)

AttributeError: 'NoneType' object has no attribute 'IPPROTO_ICMP'

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