Traceroute method to identify devices in tunneled segment of routing path

A method, comprising:

• receiving, from a probe source device, a probe containing an address of a destination device and a hop limit value;
• copying, from the probe and into a tunnel header associated with a tunneled data packet, the hop limit value of the probe;
• sending, to an intermediate device, the tunneled data packet, the intermediate device being part of a routing tunnel between a tunnel entrance device and the destination device;
• receiving, from the intermediate device, a first message associated with the tunneled data packet;
• at least partially in response to receiving the first message:
• generating a second message, the second message containing a source address corresponding to an address of the intermediate device;
• and
• sending, to the probe source device, the second message.

A probe source device, comprising:

• one or more processors;
• and
• one or more computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• sending, to a tunnel entrance device, a first probe containing a destination device address and a first hop limit value;
• receiving, from the tunnel entrance device, a first message associated with the first probe, the first message containing an address associated with an intermediate device, the intermediate device being part of a routing tunnel between the tunnel entrance device and the destination device;
• based at least in part on receiving the first message:
• sending, to the tunnel entrance device, a second probe containing the destination device address and a second hop limit value;
• and
• receiving, from the tunnel entrance device, a second message associated with the second probe, the second message containing the destination device address.