diff --git nselib/snmp.lua nselib/snmp.lua
index 2bf4c5f..11573ce 100644
--- nselib/snmp.lua
+++ nselib/snmp.lua
@@ -497,6 +497,7 @@ function snmpWalk( socket, base_oid )
 		value = snmpdata[1][1]
 		oid  = snmpdata[1][2]
 		
+		stdnse.print_debug("base_oid %s oid %s", base_oid, oid)
 		if not oid:match( base_oid ) or base_oid == oid then
 			break
 		end