Hi Colin, [snipped] > Sure, but is it needed? If you want DCCP-over-UDP encapsulation to be > seamless, then surely you need to try it every time a native > connection attempt fails. In that case, there's no need for separate > signalling. I have a problem with this thought of failing over -- how long is it going to take? I see the desirability of this kind of seamless operation, but it's going to take some thought to come up with a method of doing it that doesn't have serious drawbacks. Tom P.