我一直收到一个错误，说我的脚本中没有定义Ether（）方法。我使用的是python 2.7，arphrequest和arphresponse变量位于类中的一个函数中。我正在跟随一个教程，它是完全相同的代码。还有一个项目中有相同的代码https://github.com/OsandaMalith/ARP-Spoofer/blob/master/arp.py（171行）
from scapy import *
arprequest = Ether(dst='ff:ff:ff:ff:ff:ff')/ARP(pdst=ip+str(i), hwdst='ff:ff:ff:ff:ff:ff')
arpresponse = srp1(arprequest, timeout=2, verbose=0)
Traceback (most recent call last):
File "skivy.py", line 96, in <module>
MITMtool().run()
File "/usr/lib/python2.7/dist-packages/kivy/app.py", line 824, in run
runTouchApp()
File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 487, in runTouchApp
EventLoop.window.mainloop()
File "/usr/lib/python2.7/dist-packages/kivy/core/window/window_sdl2.py", line 539, in mainloop
self._mainloop()
File "/usr/lib/python2.7/dist-packages/kivy/core/window/window_sdl2.py", line 300, in _mainloop
EventLoop.idle()
File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 330, in idle
self.dispatch_input()
File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 315, in dispatch_input
post_dispatch_input(*pop(0))
File "/usr/lib/python2.7/dist-packages/kivy/base.py", line 281, in post_dispatch_input
wid.dispatch('on_touch_up', me)
File "_event.pyx", line 699, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:6856)
File "/usr/lib/python2.7/dist-packages/kivy/uix/behaviors.py", line 163, in on_touch_up
self.dispatch('on_release')
File "_event.pyx", line 695, in kivy._event.EventDispatcher.dispatch (kivy/_event.c:6815)
File "_event.pyx", line 1168, in kivy._event.EventObservers.dispatch (kivy/_event.c:11690)
File "_event.pyx", line 1052, in kivy._event.EventObservers._dispatch (kivy/_event.c:10730)
File "/usr/lib/python2.7/dist-packages/kivy/lang.py", line 1465, in custom_callback
exec(__kvlang__.co_value, idmap)
File "<string>", line 28, in <module>
File "skivy.py", line 77, in ARPscan
arprequest = Ether(dst='ff:ff:ff:ff:ff:ff')/ARP(pdst=ip+str(i), hwdst='ff:ff:ff:ff:ff:ff')
NameError: global name 'Ether' is not defined
导入不正确，应该来自all模块。
from scapy.all import *
如果要直接导入，Ether位于scapy.layers.l2中。