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Re: [lwip-devel] IP data packets are forwarded although it should never
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From: |
Indan Zupancic |
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Subject: |
Re: [lwip-devel] IP data packets are forwarded although it should never work in theory, but why? |
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Date: |
Tue, 06 Oct 2020 15:25:21 +0200 |
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User-agent: |
Roundcube Webmail/1.3.8 |
Hello Benjamin,
On 2020-10-06 14:56, Benjamin Kalytta wrote:
Is this an intended behaviour of LwIp stack or are there some options
to prevent that? Or could this be some bug?
This is how most IP stacks are implemented and is intended behaviour.
They consider the stack itself as an end node and not each interface
as an end node, so all configured IP addresses are reachable through
any interface. Mind you, packets are not forwarded between networks.
If there is enough general interest for hard separation between
different
interfaces and lwIP is willing to merge such configuration option
upstream,
I can submit a patch for this feature.
Best regards,
Indan