and out through say for example port five or five or six and importantly the port five is that kind of that the beginning of a land segment and so when the packet comes in it will send a packet out so that examination of the tac five zero six is for forwarding purposes it's for the precise purpose of figuring out what land segment i e the one that's connected to port five the packet should be forwarded on in terms of your where's for the totally so i mean so then there is some confusion about how does a bridge forwarding engine for us explain here that is for regular old forwarding and so something that's not tunneled you would absolutely look at the header and t if you look shortly above that so that definition is at start roughly life fifty nine of column five it right above it around like fifty five in the patent and explains how you have this pass through path that we're just talking about from you know from where the packet enters on the upper right hand side the pass through pass from some point eight ninety nine point zero all the down to port zero is not directly to support actually port five which is the exit it maps it directly to a lan segment as part of the configuration and the only way that the bridge knows how to get the packet to the so just starting with that is a good picture then i'll type back into comes here we see that his original packet is that is the box in the very center that regional packet has a payload and it has the address information where the packet would need to go for example to the five three two column three that explains in kind of the detail what i just tried to explain from the picture which is talks about how tunnel packets and this is around line seven tunnel fashion how and element for ten for siri these are the the local area networks and the tunnels going right through and that is intended to show how the inner packet your original packet is not looked at it all far different construction of tunnelling than one of what actually articulated in its opinion the board was clear that tunneling means quote transmitting a frame without examination but get your decision very lucky i'm looking at page construction is glued any examination that occurs during transmission for purposes of making affording decision in the board also says that they just twenty three to twenty five then we have it that the heart of the matter is page nine so when you get to that yeah so i've happy  three right there to block quoting the text of the specification itself a column five and then the board moves on from there to rely on what a risk is that of saying and it and its admission that there is examination happening for forty stations this may be exactly the same question but anywhere in the four tippit eight nine twenty three twenty five any place else where is a phrase the phrase during transmission or a phrase says that page twenty three and then what it says is that it cannot happen exempt examination of a frame for fourteen decisions is excluded by the definition of tunnelling that's an appendix twenty three and that's what the board then uses to rely on the admission so we use the term without examination and just before that to find something that's not part of the excluded examination thing and used it and the dispute between the two of you is what the terms what the meaning of this excluded thing is and i guess i'm still not understanding your position in this justification so our position is that the key word in the ports construction is that w transmitting and that it's the transmitting that needs to happen without examination and the board is getting that straight from column five of the two eleven patent you can see that on stage a lot both lines fifteen i qualified went to fifty nine through it talks about how in this tunnel mode the outer header remains unclear text warm as a packet travels through the tunnel and it's undisputed by the expert the what's happening then as the packet travels from one router to the next is that it's being examined to the frame through the tunnel and to the various internal objects such as a bridge boarding engine or the tunneling engine and you can see that column seven lines thirty eight forty two and then again it lines forty nine to fi it's because that as the board understood that that's not that's an actually during transmission the transmission is happening at the fording engine and at the tunneling engines and that's where the transmission occurs this is kind of a precursor step  any arrangement by which with this outer header inner better business there is actually a direct transmission so that there isn't a intermediate essentially what a element no one has or twelve the bridge interconnect port we look at calling seven lines thirty eight is the bridge interconnect port for twelve internally routes which means forwards data it's either the in for eighteen the tunnel all way down to the land segment at the end of port five when there's a tunnel packet and so i think in terms of technically i just need to make the clarification th