How can a VM work out the address of the host node?

How can a Linux VM work out the IPaddress of the host node?

I need to connect to the IP address of the host node. I also need to know when it changes as it could be a dynamic IP. I need it to connect to a service there. Is there some way to check this, irregardless of the type of VM, VMWare, Xen, Virtual Box?

It needs to be a Linux script, and should work regardless of the h开发者_如何学编程ost operating system, whether Linux or Windows

My solution is to bridge a network adapter in the VM with one on the host, making it a dymanic IP address. As such it will always be on the subnet as the host adapter.

Next thing is to run an HTTP service on the host IP, that the VM will scan its network range on. The IP the service responds on will be the IP of the host. Having an IP service on the host is not ideal, but it is the best I can come up with.