*** Bug 2047275 has been marked as a duplicate of this bug. ***

Fix as agreed upon in the RHEL8 clone:

--- a/ipset.start-stop
+++ b/ipset.start-stop
@@ -257,7 +257,13 @@ load() {
        CLEAN_FILES="${CLEAN_FILES} ${mangled}"
        chmod 600 "${mangled}"
 
-       awk '/^(add|create) ('"${conflicts}"')/ { printf "%s ",$1; system("echo '${salt}'" $2 " | md5sum | head -c31"); $1=""; $2=""; print; next} {print}' "${merged}" > "${mangled}"
+       cat "${merged}" > "${mangled}"
+       IFS='|'
+       for set in ${conflicts}; do
+               new_name=$(echo "${salt}${set}" | md5sum | head -c31)
+               echo "s/^(add|create) $set /\1 $new_name /"
+       done | sed -i -r -f - "${mangled}"
+       unset IFS
        if ! ipset_restore "${mangled}"; then
                err "Failed to restore configured sets"
                exit 1

Moving to 9.1 due to lack of QE capacity.

Still not enough capacity for this, moving to 9.2.

Jiri, do you have capacity to do this in RHEL9.1.z? It would auto-propagate to RHEL9.2.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (ipset bug fix and enhancement advisory), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:0947