The document proposes a Tunnel Compress Scheme (TCS) to solve the pinball routing problem in PMIPv6-based nested NEMO networks. The TCS compresses multiple tunnels between the innermost entry point and outermost exit point of the tunnels into a single IP-in-IP tunnel. It uses the host-based routing capabilities of MAGs to forward tunneled packets from the outermost exit point to the innermost entry point, without decapsulating the packets. The TCS extends the Proxy Binding Update message with a new flag and TCS option to carry tunnel information between nodes and setup the compressed tunnel.