Merge pull request #1924 from Bastian-Krause/bst/rawnetworkinterfacedriver-no-listen

driver/rawnetworkinterfacedriver: raise when tcpdump fails to start listening

Author: Bastian-Krause

labgrid/driver/rawnetworkinterfacedriver.py

@@ -237,6 +237,8 @@ def start_record(self, filename, *, count=None, timeout=None):
                     e.stderr = stderr
                     raise
 
+                raise ExecutionError(f"tcpdump exited before emitting 'tcpdump: listening on': {stderr}")
+
             if line.startswith(b"tcpdump: listening on"):
                 break