diff --git a/ipset.spec b/ipset.spec
index 8bdf960..daa5f6a 100644
--- a/ipset.spec
+++ b/ipset.spec
@@ -3,7 +3,7 @@
 
 Name:             ipset
 Version:          7.11
-Release:          6%{?dist}
+Release:          7%{?dist}
 Summary:          Manage Linux IP sets
 
 License:          GPLv2
@@ -170,6 +170,9 @@ fi
 
 
 %changelog
+* Mon Jan 31 2022 Phil Sutter <psutter@redhat.com> - 7.11-7
+- Fix for bad performance restoring large sets which are in use
+
 * Mon Nov 08 2021 Phil Sutter <psutter@redhat.com> - 7.11-6
 - Sync ipset.service with RHEL8, fix the required package name
 
diff --git a/ipset.start-stop b/ipset.start-stop
index 0c493dc..377beed 100644
--- 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