[vbox-dev] Small "bug" in DrvUDPTunnel

Martin Simmons martin at lispworks.com
Mon Jan 16 07:42:29 PST 2012


>>>>> On Mon, 16 Jan 2012 13:28:13 +0200, Alexey Eromenko said:
> 
> 1. If the source port is random, how do you target it ?

The destination would use recvfrom, so it gets the source address and port.


> 2. What utility does it serve ? no need to know in advance which ports
> are free on host ?

I think there are two use cases:

1) Binding on the client side to set the source address without forcing a
specific source port.

2) Binding without a port number on the server side and registering the actual
port number with some external database such as rpcbind.

__Martin




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