From 517895f69d7ea42c2fa7694d290a38bea6ebe2ac Mon Sep 17 00:00:00 2001
From: "Dustin C. Hatch" <dustin@hatch.name>
Date: Thu, 17 Mar 2022 10:26:45 -0500
Subject: [PATCH] rootfs: Avoid unnecessarily restarting rsyslog

When the DHCP lease is renewed, if the specified log servers are the
same as the previous lease, there is no reason to regenerate the
*rsyslog* configuration file and restart the service.
---
 rootfs/overlay/usr/lib/dhcpcd/dhcpcd-hooks/60-syslog | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/rootfs/overlay/usr/lib/dhcpcd/dhcpcd-hooks/60-syslog b/rootfs/overlay/usr/lib/dhcpcd/dhcpcd-hooks/60-syslog
index f377917..654f380 100644
--- a/rootfs/overlay/usr/lib/dhcpcd/dhcpcd-hooks/60-syslog
+++ b/rootfs/overlay/usr/lib/dhcpcd/dhcpcd-hooks/60-syslog
@@ -12,10 +12,13 @@ gen_action() {
 changed=false
 if [ -n "${interface}" ] && [ -d /run/rsyslog.d ]; then
     if [ -n "${new_log_servers}" ]; then
-        echo '# Generated by dhcpcd' > /run/rsyslog.d/dhcpcd."${interface}".conf
-        for s in ${new_log_servers}; do
-            gen_action "${s}" >> /run/rsyslog.d/dhcpcd."${interface}".conf
-        done
+        if [ "${new_log_servers}" != "${old_log_servers}" ]; then
+            echo '# Generated by dhcpcd' \
+                > /run/rsyslog.d/dhcpcd."${interface}".conf
+            for s in ${new_log_servers}; do
+                gen_action "${s}" >> /run/rsyslog.d/dhcpcd."${interface}".conf
+            done
+        fi
         changed=true
     elif [ -n "${old_log_servers}" ]; then
         rm -f /run/rsyslog.d/dhcpcd."${interface}".conf