netdev - Turn on net_dbg_ratelimited() diagnostics in linux-5.10.67 ?

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Date:   Tue, 28 Sep 2021 22:00:35 +0000
From:   "Templin (US), Fred L" <Fred.L.Templin@...ing.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Turn on net_dbg_ratelimited() diagnostics in linux-5.10.67 ?

Hi, it has been a while since I have delved into linux kernel networking internals,
and it appears that diagnostics-generation code has been significantly cleaned up
over the years since I last checked. I am working in linux-5.10.67, and I see that
network diagnostics are now generated by calls to "net_dbg_ratelimited()" but
that these seem to be disabled by default.

How can I turn on net_dbg_ratelimited() diagnostics, and once enabled where
do I go to see the diagnostics output?

Thanks - Fred