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-rwxr-xr-xsrc/op_mode/neighbor.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/op_mode/neighbor.py b/src/op_mode/neighbor.py
index b0b52c082..d86a372ac 100755
--- a/src/op_mode/neighbor.py
+++ b/src/op_mode/neighbor.py
@@ -32,12 +32,17 @@ import typing
import vyos.opmode
+def interface_exists(interface):
+ import os
+ return os.path.exists(f'/sys/class/net/{interface}')
def get_raw_data(family, interface=None, state=None):
from json import loads
from vyos.util import cmd
if interface:
+ if not interface_exists(interface):
+ raise ValueError(f"Interface '{interface}' does not exist in the system")
interface = f"dev {interface}"
else:
interface = ""