Hello everyone, To be more concrete and to better understand issues behind the TAC proposal, I draw a scheme for fictional scenario where German user with non-public 44 IP wants to access via HAMNET a Dutch user's web service, running on his computer with public 44 IP: http://ftp.eranova.si/44net/scenario-de-nl-s57nk-jul21.png Both have 44 IPs in 44.128/16 range covered in TAC proposal. HAMNET is a closed network, non accessible from Internet while Dutch 44net is completely open to public access. Two extreme cases therefore. German user has set a simple static route: all traffic to 44.128/10 should go via HAMNET while all the rest via NAT to internet. NAT is needed because his local 44 IP is from a HAMNET's subnet which is not announced all over the Internet via BGP. Contrary to Dutch user, which local 44 IP is from BGP announced subnet and therefore everyone from Internet can access his web server. Also, he can access anything on the public Internet without any NAT needed. Furthermore, he is proudly represented on the Internet as radio amateur because of his 44 IP. Now to the scenario: German user finds his Dutch college website interesting and he'd like to access it. But his 44.128/10 static route will direct him over the HAMNET, not to public Internet. No access possible until HAMNET is connected directly to Dutch 44net. Now suppose we connect both those nets too. Dutch web server will now respond to German college's web request and response will be hopefully routed back to him. Hopefully the requests from public internet will also be served as before. Am I correct with this scenario? Are there any routing issues, are they already solved? Or how to solve them? If this scenario doable, are there some more issues? Best 73 Janko S57NK