I use 2651XM as gateway. We have a sister concern. It also uses 2651XM as gateway. I have created a GRE tunnel between our office (Branch A) and the sister concern (Branch B). users VPN to Branch A. Recently a user asked me if he could access the resources on Branch B while VPNd to Branch A. Branch A and Branch B have different IP subnets. Could you please guide me as to how the routing will happen? How would NAT affect this?