﻿id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
17277	Bridged Adapter driver filter out PROFINET DCP packets in Linux Host => Fixed in SVN	Tomáš Pinkas		"'''Host:''' Linux (Debian, kernel 4.11.0), Ethernet controller Intel I219-LM, driver e1000e.ko [[BR]]
'''Guest:''' Windows 7 Professional [[BR]]
'''Used software:''' [http://profinetuniversity.com/profinet-basics/dcp/profinet-dcp/ Siemens TIA portal V14 SP1][[BR]]
'''Action:''' search for network devices on local network segment using protocol [https://wiki.wireshark.org/PROFINET/DCP DCP], which is link layer broadcast ([http://profinetuniversity.com/profinet-basics/dcp/profinet-dcp/ more about DCP]). In TIA Portal it's function ''Update accessible devices''. [[BR]]

'''What have I discovered:''' 
1. Software in GUEST OS send packet ""PN-DCP: Ident req"" (see attached pcap files)
2. HOST OS capture reply packet ""PN-DCP: Ident OK"" from remote device, but GUEST OS doesn't get it. It's probably filtered out by Bridged Adapter driver.

Same scenario works OK with Windows 10 HOST and VirtualBox 5.2.0, but doesn't work with Linux HOST.[[BR]]
Same scenario works with Linux HOST and VirtualBox 5.1.30.

'''Attachment:''' pcap files during DCP discovery process:

1. host-traffic.pcapng: from Linux HOST OS, see packets 12 and 14.
2. guest-traffic.pcap: from VirtualBox packet logging mechanism, see packet 191. and no Ident OK response further.
3. VirtualBox log file

"	defect	closed	network	VirtualBox 5.2.0	fixed	siemens tia portal simatic	tom.pinkas@…	Windows	Linux
