[dpdk-stable] [PATCH] README: clarify that step 3 should run on latest main

[Christian Ehrhardt <christian.ehrhardt@canonical.com>]

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
---
 README | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README b/README
index 920cf3c..0f5ae88 100644
--- a/README
+++ b/README
@@ -126,6 +126,11 @@ The 'devtools/get-maintainer.sh' tool from the DPDK repository is used to
 compile the list of maintainers to CC for each patch. A configuration file
 needs to be set up first, see the script itself for instructions.
 
+It is highly recommended to check out the most recent upstream/main branch
+in $STABLE_DIR as the tools will make use of the MAINTAINERS file found there.
+If not checking out the latest the generated addresses might be outdated and
+not reach the current maintainers.
+
 If you use GIT_AM_PAUSE_ON_FAIL="yes" you can call 3-request-backport without
 a list and it will process patches in xx.yy.z/tmp_import/list that it does
 not find as applied in the git history from the current head.
-- 
2.31.1