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Limit the number of Router Advertisements processed on an interface

From Dheeraj Kandula <dkandula@gmail.com>
Newsgroups linux.debian.maint.ipv6
Subject Limit the number of Router Advertisements processed on an interface
Date 2022-06-15 16:30 +0200
Message-ID <EyCbT-4Zr0-3@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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Hi All,
     Is it possible to limit the number of Router Advertisements that will
be processed on an interface or on a Linux device as a whole (either
granularity is fine)?
*For example*, if an interface receives more than 200 RAs within a time
interval, only the first 200 will be processed.

There are sysctls to *disable* RA completely. i.e.
net.ipv6.conf.default.accept_ra=0,

Disable processing Default routes: net.ipv6.conf.default.accept_ra_defrtr=0

Disable processing Prefix: net.ipv6.conf.default.accept_ra_pinfo=0.

But I want to enable the above 3 functionalities but limit the number of
them being processed.

*Why?*
This is to avoid DOS attacks using RAs from being bombarded onto a linux
machine.

Dheeraj

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Thread

Limit the number of Router Advertisements processed on an interface Dheeraj Kandula <dkandula@gmail.com> - 2022-06-15 16:30 +0200
  Re: Limit the number of Router Advertisements processed on an  interface Marc Haber <mh+debian-ipv6@zugschlus.de> - 2022-06-15 17:50 +0200
    Re: Limit the number of Router Advertisements processed on an interface Dheeraj Kandula <dkandula@gmail.com> - 2022-06-15 18:30 +0200
      Re: Limit the number of Router Advertisements processed on an interface Dheeraj Kandula <dkandula@gmail.com> - 2022-07-11 22:00 +0200
  Re: Limit the number of Router Advertisements processed on an interface Michael Richardson <mcr@sandelman.ca> - 2022-06-15 18:10 +0200

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