IP conflict while I'm using bridged network

[being]

I upgrade virtualbox to 5.0,I'm annoyed at ip conflict.Who can help me?

[noteirak]

I'm afraid we cannot help. This means you have configured a real machine or a virtual machine with the same IP as your desktop. You need to amend the configuration wherever it is wrong. It will be an OS configuration, not a VirtualBox one.

[being]

I'm afraid we cannot help. This means you have configured a real machine or a virtual machine with the same IP as your desktop. You need to amend the configuration wherever it is wrong. It will be an OS configuration, not a VirtualBox one.

but when i use previous virtualbox version,all is ok.Only after i upgrade to version 5.0,this happens.
I use bridged network and have two network card,and both obtain ip address automatically.

[noteirak]

Changing VirtualBox version was just something that made the problem visible, but it was always there. Most likely you've configured a static IP which is in the DHCP range of your router, and that causes a conflict.
I'm afraid that's all we can do for you. you need to check every computer on your network to see which one is the culprit.