UDP Tunnel connect failed when the vm is running

[feverwind]

Below is my topology:

VM1 <-----------------> VM2
network adpter1 network adpter1

I use udp tunnel connect two network card when the both side VM is running. If i connect and disconnect the two Adapter more than 3 times, sometimes I ping peer side VM failed.

my code is below

connect

Code: Select all

netadp = Session.getNetworkAdapter(0)
netadp.attachmentType = self.constants.NetworkAttachmentType_Generic
netadp.genericDriver = u"UDPTunnel"
netadp.setProperty(u"sport", str(iSrcPort))
netadp.setProperty(u"dest", str(daddr))
netadp.setProperty(u"dport", str(iDestPort))
Session.saveSettings()

disconnect

Code: Select all

netadp = Session.getNetworkAdapter(0)

netadp.genericDriver = u""
netadp.setProperty(u"sport", u"")
netadp.setProperty(u"dest", u"")
netadp.setProperty(u"dport", u"")
netadp.attachmentType = self.constants.NetworkAttachmentType_Null
Session.saveSettings()

[noteirak]

Please post a standalone code that produce your error, not just a snipset.
Also, you use UDPTunnel as driver - this is not part of the official package AFAIK (maybe in the SVN?) so you might need to seek support to the entity who created that driver.

[feverwind]

Please post a standalone code that produce your error, not just a snipset.
Also, you use UDPTunnel as driver - this is not part of the official package AFAIK (maybe in the SVN?) so you might need to seek support to the entity who created that driver.

I use the official version 4.2.22, the genericDriver parameter i use accord to the virtualbox API Handbook.
what is your method to create the udp tunnel by virtualbox API.