IP in IP - Wikipedia
IP in IP - Wikipedia IP in IP is an IP tunneling protocol that encapsulates one IP packet in another IP packet. To encapsulate an IP packet in another IP packet, an outer header is added with SourceIP, the entry point of the tunnel and the Destination point, the exit point of the tunnel. While doing this, the inner packet is unmodified (except the TTL field, which is decremented). AskF5 | Manual Chapter: Creating IP Tunnels The BIG-IPsystem requires that tunnels used as routes have a self IP address associated with the tunnel itself, distinct from the self IP address configured as a tunnel endpoint. After configuring a self IP address, you can configure routes that use the tunnel as a resource.
Jan 26, 2018
Fix Issues with Duplicate Tunnel Interface IP Addresses
How to protect an IP-IP tunnel with IPSec | MiViLiSNet
IP address ranges on the LAN subnet are configured in a lease pool and assigned to network access tunnel clients. When this setting is enabled, a host on the LAN that sends an ARP query for a client address gets a response from Access Policy Manager with its own MAC address. Implementing VPN split tunneling for Office 365