Hello ppalias and thank you for your replay.
I want to choose your first solution, interface in router B, but I do not understand the subnet that you noted: 10.10.10.192, I specify that IP 10.10.10.211 is a public IP, and I put 10 not to note the true IP, I would have noted X.X.X.X.212.
I contacted fulvio for a solution and he says I need bridge the VPN. But I need more than details to make a success of this configuration. Can you detail the stages?
I think of testing this solution:
1-in B side I configure a subnet X.X.X.X/29 and in this subnet I configure a NIC with public IP: X.X.X.212 255.255.255.248
2-in A side I bridge ETH0 (public IP: X.X.X.211) and VPN00 with STP
3-in B side I bridge VPN00 with the interface of stage 1 (X.X.X.211) with STP
You think that this is a good solution?