I wonder whether you could do this with a lower number of IPs, just repeating them in the traceroute reply. You might not be able to build a real network like t

I wonder whether you could do this with a lower number of IPs, just repeating them in the traceroute reply. You might not be able to build a real network like that, but if you're manually replying to ICMP with a raw socket, this should be possible, I doubt the client tries to de-duplicate based on addresses.