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eqvinox a day ago

> Packet loss over ICMP can be artificial based on the backplane load of routers.

This doesn't generally apply to the end host; note the last hop in the trace I posted is the web server itself. Also, the second last hop having very similar loss% makes it likely that neither of the two systems is hitting rate limits (as they would be different).

> Are you seeing TCP retransmits to port 443?

If the webpage loaded normally, I wouldn't have investigated to begin with ;).

Right now, the loss on TCP SYNs is about 70%. (mtr -T -P 443) Second to last hop still has roughly the same loss. Something's h0rked at americanis.net.

Bender a day ago | parent [-]

If you are confident where the loss is then the only thing you could really do within HN is email Daniel (dang) and ask him to replicate the issue and open a ticket with their upstream provider to check routes and for losses. hn@ycombinator.com

Outside of HN I suppose you could check the Nanog mailing lists [1] and chat servers to see if there is any discussion ongoing for those networks.

[1] - https://lists.nanog.org/mailman3/

eqvinox 11 hours ago | parent [-]

I decided to wait a bit, and it's fixed now by way of "americanis.net" no longer being on the path.

Bender 9 hours ago | parent [-]

Groovy. Glad it worked out.