+# try to recreate sets faster than one-at-a-time by generating restore rules
+function ipset_restore_from_cidr(){
+ local vmatch
+ local set_name="$1"
+
+ for v in '' '6'
+ do
+ case "$v" in
+ 6) vmatch=':';;
+ *) vmatch='\.';;
+ esac
+ # extract existing set configuration to create temporary set
+ (set -o pipefail; $IPSET save "${set_name}${v}" 2>/dev/null | grep -m 1 '^create ' | sed "s/\(create ${set_name}${v}\)/\1-tmp/") || continue
+ # populate with new data
+ decommentcat "${set_name}.cidr" "${set_name}.cidr.$(hostname -s)" 2>/dev/null | sed -n 's/\(.*'"${vmatch}"'.*\)/add '"${set_name}${v}-tmp"' \1/p'
+ done
+}
+