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Update inet6.py for Destination Option #4695

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Update inet6.py for Destination Option #4695

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15 changes: 14 additions & 1 deletion scapy/layers/inet6.py
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Original file line number Diff line number Diff line change
Expand Up @@ -481,7 +481,20 @@ def answers(self, other):
elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrSegmentRouting): # noqa: E501
return self.payload.answers(other.payload.payload) # Buggy if self.payload is a IPv6ExtHdrRouting # noqa: E501
elif other.nh == 60 and isinstance(other.payload, IPv6ExtHdrDestOpt):
return self.payload.answers(other.payload.payload)
# Extension Headers can show weird behavious.
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Copilot AI Sep 14, 2025

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There's a typo in the comment: 'behavious' should be 'behavior'.

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# Extension Headers can show weird behavious.
# Extension Headers can show weird behavior.

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# Linux's sk_buff considers the IPv6 Payload
# to be either TCP, UDP or ICMP. It does not
# consider Extension Headers to be the payload.
# Following similar architecture, This small
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The word 'This' should not be capitalized mid-sentence. It should be 'this small'.

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# Following similar architecture, This small
# Following similar architecture, this small

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# modification let's packet flow with Destination
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Incorrect use of apostrophe: 'let's' should be 'lets' (third person singular verb, not contraction).

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# modification let's packet flow with Destination
# modification lets packet flow with Destination

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# Option on both, request and response packets
# be captured as well.
if UDP in self and UDP in other:
return self[UDP].answers(other[UDP])
elif TCP in self and TCP in other:
return self[TCP].answers(other[TCP])
else:
return self.payload.answers(other.payload.payload) # Previous Implementation
elif self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): # BU in reply to BRR, for instance # noqa: E501
return self.payload.payload.answers(other.payload)
else:
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