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vxlan: T5668: add CLI knob to enable ARP/ND suppression (backport #2413) #2419

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merged 1 commit into from
Oct 31, 2023

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@mergify mergify bot commented Oct 31, 2023

This is an automatic backport of pull request #2413 done by Mergify.


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In order to minimize the flooding of ARP and ND messages in the VXLAN network,
EVPN includes provisions [1] that allow participating VTEPs to suppress such
messages in case they know the MAC-IP binding and can reply on behalf of the
remote host. In Linux, the above is implemented in the bridge driver using a
per-port option called "neigh_suppress" that was added in kernel version 4.15.

[1] https://www.rfc-editor.org/rfc/rfc7432#section-10

(cherry picked from commit ec9a955)
@github-actions github-actions bot added the sagitta VyOS 1.4 LTS label Oct 31, 2023
@vyosbot vyosbot requested review from a team, dmbaturin, sarthurdev, zdc, jestabro, sever-sever and c-po and removed request for a team October 31, 2023 06:01
@c-po c-po merged commit 4766fc5 into sagitta Oct 31, 2023
4 checks passed
@mergify mergify bot deleted the mergify/bp/sagitta/pr-2413 branch October 31, 2023 06:32
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