TypeError: unhashable type: 'RandIP' when running pkt.summary() when pkt IP packet has RandIP #4883
Description
Brief description
When a pkt packet has an IP layer uses RandIP, calling pkt.summary() gives the TypeError: unhashable type: 'RandIP' error.
Scapy version
Python version
3.12.3
Operating system
6.14.0
Additional environment information
Tested in various other environments.
How to reproduce
$ python
Python 3.12.3 (main, Nov 6 2025, 13:44:16) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from scapy.all import *
>>> pkt = IP(dst=RandIP())
>>> pkt.summary()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "scapy/scapy/packet.py", line 1710, in summary
return self._do_summary()[1]
^^^^^^^^^^^^^^^^^^
File "/scapy/scapy/packet.py", line 1687, in _do_summary
ret = self.mysummary()
^^^^^^^^^^^^^^^^
File "scapy/scapy/layers/inet.py", line 627, in mysummary
s = self.sprintf("%IP.src% > %IP.dst% %IP.proto%")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "scapy/scapy/packet.py", line 1650, in sprintf
elif cls == self.__class__.__name__ and hasattr(self, fld):
^^^^^^^^^^^^^^^^^^
File "scapy/scapy/packet.py", line 504, in __getattr__
return v if isinstance(v, RawVal) else fld.i2h(self, v)
^^^^^^^^^^^^^^^^
File "scapy/scapy/fields.py", line 935, in i2h
x = self.__findaddr(pkt)
^^^^^^^^^^^^^^^^^^^^
File "scapy/scapy/fields.py", line 924, in __findaddr
return pkt.route()[1] or conf.route.route()[1]
^^^^^^^^^^^
File "scapy/scapy/layers/inet.py", line 580, in route
return conf.route.route(dst, dev=scope)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "scapy/scapy/route.py", line 187, in route
if (dst, dev) in self.cache:
^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: unhashable type: 'RandIP'
>>>
Actual result
No response
Expected result
I'd expect each call to pkt.summary() to show a different IP.
I'm guessing we shouldn't look at the cache before rendering the IP.
pkt.show2() works as expected.
Related resources
No response