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Message-ID: <20230503113528.315485f1@hermes.local> Date: Wed, 3 May 2023 11:35:28 -0700 From: Stephen Hemminger <stephen@...workplumber.org> To: Aleksey Shumnik <ashumnik9@...il.com> Cc: netdev@...r.kernel.org, waltje@...lt.nl.mugnet.org, Jakub Kicinski <kuba@...nel.org>, gw4pts@...pts.ampr.org, kuznet@....inr.ac.ru, "willemdebruijn.kernel@...il.com" <willemdebruijn.kernel@...il.com>, gnault@...hat.com Subject: Re: [BUG] Dependence of routing cache entries on the ignore-df flag On Wed, 3 May 2023 18:01:03 +0300 Aleksey Shumnik <ashumnik9@...il.com> wrote: > Might you answer the questions: > 1. How the ignore-df flag and adding entries to the routing cache is > connected? In which kernel files may I look to find this connection? > 2. Is this behavior wrong? > 3. Is there any way to completely disable the use of the routing > cache? (as far as I understand, it used to be possible to set the > rhash_entries parameter to 0, but now there is no such parameter) > 4. Why is an entry added to the routing cache if a suitable entry was > eventually found in the arp table (it is added directly, without being > temporarily added to the routing table)? What kernel version. The route cache has been completely removed from the kernel for a long time.
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