diff --git a/heartbeat/aws.sh b/heartbeat/aws.sh
index 64f2e13a7..ebb4eb1f4 100644
--- a/heartbeat/aws.sh
+++ b/heartbeat/aws.sh
@@ -1,71 +1,92 @@
 #!/bin/sh
 #
 #
 #   AWS Helper Scripts
 #
 #
 
 : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
 . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
 
 # Defaults
 OCF_RESKEY_curl_retries_default="4"
 OCF_RESKEY_curl_sleep_default="3"
 
 : ${OCF_RESKEY_curl_retries=${OCF_RESKEY_curl_retries_default}}
 : ${OCF_RESKEY_curl_sleep=${OCF_RESKEY_curl_sleep_default}}
 
 # Function to enable reusable IMDS token retrieval for efficient repeated access 
 # File to store the token and timestamp
 TOKEN_FILE="${HA_RSCTMP}/.aws_imds_token"
 TOKEN_FUNC="fetch_new_token"  # Used by curl_retry() if saved token is invalid
 TOKEN_LIFETIME=21600  # Token lifetime in seconds (6 hours)
 TOKEN_EXPIRY_THRESHOLD=3600  # Renew token if less than 60 minutes (1 hour) remaining
 DMI_FILE="/sys/devices/virtual/dmi/id/board_asset_tag" # Only supported on nitro-based instances.
 
 # Function to fetch a new token
 fetch_new_token() {
     TOKEN=$(curl_retry "$OCF_RESKEY_curl_retries" "$OCF_RESKEY_curl_sleep" "--show-error -sX PUT -H 'X-aws-ec2-metadata-token-ttl-seconds: $TOKEN_LIFETIME'" "http://169.254.169.254/latest/api/token")
     echo "$TOKEN $(date +%s)" > "$TOKEN_FILE"
     chmod 600 "$TOKEN_FILE"
     echo "$TOKEN"
 }
 
 # Function to retrieve or renew the token
 get_token() {
     if [ -f "$TOKEN_FILE" ]; then
         read -r STORED_TOKEN STORED_TIMESTAMP < "$TOKEN_FILE"
         CURRENT_TIME=$(date +%s)
         ELAPSED_TIME=$((CURRENT_TIME - STORED_TIMESTAMP))
 
         if [ "$ELAPSED_TIME" -lt "$((TOKEN_LIFETIME - TOKEN_EXPIRY_THRESHOLD))" ]; then
             # Token is still valid
             echo "$STORED_TOKEN"
             return
         fi
     fi
     # Fetch a new token if not valid
     fetch_new_token
 }
 
 get_instance_id() {
     local INSTANCE_ID
 
     # Try to get the EC2 instance ID from DMI first before falling back to IMDS.
     ocf_log debug "EC2: Attempt to get EC2 Instance ID from local file."
     if [ -r "$DMI_FILE" ] && [ -s "$DMI_FILE" ]; then
         INSTANCE_ID="$(cat "$DMI_FILE")"
         case "$INSTANCE_ID" in
             i-0*) echo "$INSTANCE_ID"; return "$OCF_SUCCESS" ;;
         esac
     fi
 
     INSTANCE_ID=$(curl_retry "$OCF_RESKEY_curl_retries" "$OCF_RESKEY_curl_sleep" "--show-error -s -H 'X-aws-ec2-metadata-token: $TOKEN'" "http://169.254.169.254/latest/meta-data/instance-id")
     if [ $? -ne 0 ]; then
         ocf_exit_reason "Failed to get EC2 Instance ID"
         exit $OCF_ERR_GENERIC
     fi
 
     echo "$INSTANCE_ID"
     return "$OCF_SUCCESS"
 }
+
+get_interface_mac() {
+    local MAC_FILE MAC_ADDR rc
+    MAC_FILE="/sys/class/net/${OCF_RESKEY_interface}/address"
+    if [ -f "$MAC_FILE" ]; then
+        cmd="cat ${MAC_FILE}"
+    else
+        cmd="ip -br link show dev ${OCF_RESKEY_interface} | tr -s ' ' | cut -d' ' -f3"
+    fi
+    ocf_log debug "executing command: $cmd"
+    MAC_ADDR="$(eval $cmd)"
+    rc=$?
+    if [ $rc != 0 ]; then
+        ocf_log warn "command failed, rc: $rc"
+        return $OCF_ERR_GENERIC
+    fi
+    ocf_log debug "MAC address associated with interface ${OCF_RESKEY_interface}: ${MAC_ADDR}"
+
+    echo $MAC_ADDR
+    return $OCF_SUCCESS
+}