Re: [PATCH 5.10 098/717] net: evaluate net.ipvX.conf.all.ignore_routes_with_linkdown

On Mon, Dec 28, 2020 at 10:50:58AM -0800, Jakub Kicinski wrote:

On Mon, 28 Dec 2020 13:41:36 +0100 Greg Kroah-Hartman wrote:

...

From: Vincent Bernat vincent@bernat.ch

[ Upstream commit c0c5a60f0f1311bcf08bbe735122096d6326fb5b ]

Introduced in 0eeb075fad73, the "ignore_routes_with_linkdown" sysctl ignores a route whose interface is down. It is provided as a per-interface sysctl. However, while a "all" variant is exposed, it was a noop since it was never evaluated. We use the usual "or" logic for this kind of sysctls.

I'd recommend to drop 98 and 99, at least for now.

The kernel always behaved this way, and it remains to be seen if anyone depended on that (mis) behavior.

This needs to hit a real release.

I'll drop it.