diff --git a/dhclient-script b/dhclient-script
index 29c8b72..04b9ff6 100644
--- a/dhclient-script
+++ b/dhclient-script
@@ -747,7 +747,9 @@ case "${reason}" in
     EXPIRE|FAIL|RELEASE|STOP)
         # only restore config files if there are no other dhclient processes
         # running (#306381)
-        any_other_clients="$(ps -eo pid,ppid,comm | grep dhclient | grep -v ${PPID})"
+        dhclient_script_PID="$$"
+        dhclient_PID="${PPID}"
+        any_other_clients=$(ps -eo pid,ppid,comm | grep dhclient | grep -v -E "${dhclient_script_PID}|${dhclient_PID}")
         if [ -n "${any_other_clients}" ]; then
             if [ -f ${SAVEDIR}/resolv.conf.predhclient.${interface} ]; then
                 change_resolv_conf ${SAVEDIR}/resolv.conf.predhclient.${interface}