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[lwip-devel] [bug #60607] IP traffic "leaks" between netifs
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From: |
Patrik Lantto |
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Subject: |
[lwip-devel] [bug #60607] IP traffic "leaks" between netifs |
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Date: |
Mon, 17 May 2021 07:23:00 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Edg/90.0.818.56 |
Follow-up Comment #4, bug #60607 (project lwip):
[comment #2 comment #2:]
> This is standard IP stack behaviour. Keep in mind the same happens for all
outgoing packets.
I realize now I should have read RFC 1122 before stating that this was a
"faulty behaviour" - it is as you say standard for "weak host model" stacks.
It was me that expected the "strong host model", and it is rather a feature
request to support this model.
Perhaps the best way forward here is to add a setting LWIP_STRONG_HOST_MODEL
(defaulting to 0) and put that around parts of the code netif search code in
ip4_input as well as for the routing (which would now be src aware routing if
I understand correctly).
If your patchset would be available, that would obviously help - otherwise I
can volunteer creating a patch for review.
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