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[204.195.123.141]) by smtp.gmail.com with ESMTPSA id r8-20020aa79ec8000000b006e50cedb59bsm14771413pfq.16.2024.03.08.09.17.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Mar 2024 09:17:06 -0800 (PST) From: Stephen Hemminger To: netdev@vger.kernel.org Cc: Stephen Hemminger Subject: [PATCH iproute2-next 1/3] README: add note about kernel version compatibility Date: Fri, 8 Mar 2024 09:15:59 -0800 Message-ID: <20240308171656.9034-1-stephen@networkplumber.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: dsahern@gmail.com Since next netem changes will break some usages of out of support kernels, add an explicit policy about range of kernel versions. Signed-off-by: Stephen Hemminger --- README | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/README b/README index 4eb9390a3ffa..a7d283cb809d 100644 --- a/README +++ b/README @@ -12,6 +12,19 @@ Stable version repository: Development repository: git://git.kernel.org/pub/scm/network/iproute2/iproute2-next.git +Compatibility +------------- +A new release of iproute2 is done with each kernel version, but +there is a wide range of compatibility. Newer versions of iproute2 +will still work with older kernels, but there are some limitations. + +If an iproute2 command with a new feature is used with an older +kernel, the kernel may report an error or silently ignore the new +attribute. Likewise if older iproute2 is used with an newer kernel, +it is not possible to use or see new features. The range of +compatibility extends back as far as the oldest supported Long Term +Support (LTS) kernel version. + How to compile this. -------------------- 1. libdbm