From 5bb59f613676ded37a1db968992c7a7815c87335 Mon Sep 17 00:00:00 2001
From: kellyyeh <42761586+kellyyeh@users.noreply.github.com>
Date: Fri, 10 Dec 2021 18:34:47 -0800
Subject: [PATCH] [201811] Fix radv start condition logic (#9492)

---
 dockers/docker-router-advertiser/start.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dockers/docker-router-advertiser/start.sh b/dockers/docker-router-advertiser/start.sh
index 77a385fe8f..0178a0c081 100755
--- a/dockers/docker-router-advertiser/start.sh
+++ b/dockers/docker-router-advertiser/start.sh
@@ -6,8 +6,8 @@ supervisorctl start rsyslogd
 
 # Router advertiser should only run on ToR (T0) devices
 DEVICE_ROLE=$(sonic-cfggen -d -v "DEVICE_METADATA.localhost.type")
-if [ "$DEVICE_ROLE" != "ToRRouter" || "$DEVICE_ROLE" != "MgmtToRRouter" || "$DEVICE_ROLE" != "EPMS"]; then
-    echo "Device role is not ToRRouter. Not starting router advertiser process."
+if [[ "$DEVICE_ROLE" != "ToRRouter" && "$DEVICE_ROLE" != "MgmtToRRouter" && "$DEVICE_ROLE" != "EPMS" ]]; then
+    echo "Device role is not ToRRouter, MgmtToRRouter, or EPMS. Not starting router advertiser process."
     exit 0
 fi