It would be cool if it also did actual route tracing

E.g. instead of sliding the MTU of a ping packet, slide the MTU of the port 80/443 TCP request. Just in case that traffic gets routed differently.

Edit: I see `traceroute` can do that by itself:

```
traceroute -p 80 google.com
traceroute -p 443 google.com
traceroute6 -p 80 google.com
traceroute6 -p 443 google.com
```

Possibly adding `-P TCP`, but that breaks most of the output.