diff --git a/src/etc/rc.d/netflow b/src/etc/rc.d/netflow
index 5b73c5451..09ee26f45 100755
--- a/src/etc/rc.d/netflow
+++ b/src/etc/rc.d/netflow
@@ -69,7 +69,7 @@ netflow_setup_interface()
     # determine (snmp) ifIndex
     ifIndex=0
     found=0
-    for item in $(/sbin/ifconfig -l); do
+    for item in $(/usr/local/sbin/ifinfo | awk '$1 == "Interface" { print $2 }'); do
        let ifIndex = ifIndex + 1  > /dev/null 2>&1
        if [ "$item" = "$interface" ]; then
            found=1
diff --git a/src/opnsense/scripts/netflow/lib/parse.py b/src/opnsense/scripts/netflow/lib/parse.py
index e2e1ca90d..23a4b8961 100755
--- a/src/opnsense/scripts/netflow/lib/parse.py
+++ b/src/opnsense/scripts/netflow/lib/parse.py
@@ -30,6 +30,7 @@ import glob
 import tempfile
 import subprocess
 import os
+import re
 from lib.flowparser import FlowParser
 
 
@@ -40,11 +41,11 @@ class Interfaces(object):
         """ construct local interface mapping
         """
         self._if_index = dict()
-        sp = subprocess.run(['/sbin/ifconfig', '-l'], capture_output=True, text=True)
-        if_index = 1
-        for line in sp.stdout.split():
-            self._if_index["%s" % if_index] = line
-            if_index += 1
+        sp = subprocess.run(['/usr/local/sbin/ifinfo'], capture_output=True, text=True)
+        interfaces = re.findall(r"Interface ([^ ]+)", sp.stdout)
+
+        for index, interface in enumerate(interfaces, start=1):
+            self._if_index["%s" % index] = interface
 
     def if_device(self, if_index):
         """ convert index to device (if found)