Re:Netflix to cut streaming quality in Europe for 30 days
by cthalupa on Friday March 20, 2020 @09:52AM
(#22637475)
>mtr uses UDP data packets, as far as I am aware.
Doesn't matter what it uses (though by default MTR does use regular old ICMP Echo - you have to specify -u or -t to get it in UDP or TCP mode). When TTL expires it still requires an ICMP TTL Exceeded be sent, regardless of whether or not you were sending ICMP through it.
Traceroute implementations in general are probably telling most everyone in this thread a lot less than they think, even without icmp deprioritization being taken into account.
Doesn't matter what it uses (though by default MTR does use regular old ICMP Echo - you have to specify -u or -t to get it in UDP or TCP mode). When TTL expires it still requires an ICMP TTL Exceeded be sent, regardless of whether or not you were sending ICMP through it.
Traceroute implementations in general are probably telling most everyone in this thread a lot less than they think, even without icmp deprioritization being taken into account.
https://archive.nanog.org/meetings/nanog47/presentations/Sun... is worth a read for most anyone that's ever attempted to use traceroute to troubleshoot networking, because they're almost certainly doing it wrong.