No route to host

Switching from Wifi to 5G solved it. Seems like an internet problem on my end. But it’s still weird that this only fails for the Fly API.

If this ever happens again, you can trace the route to api.fly.io.

Linux:

> traceroute api.fly.io

Windows:

> tracert api.fly.io

The trace dump will show at which point the packets get lost.

I’m running into the same issue. This is the output of traceroute api.fly.io:

traceroute to api.fly.io (77.83.143.220), 64 hops max, 52 byte packets
 1  dlinkrouter5821.(null) (192.168.11.1)  2.751 ms  2.133 ms  2.202 ms
 2  192.168.1.1 (192.168.1.1)  2.728 ms  2.728 ms  2.356 ms
 3  118.174.216.1 (118.174.216.1)  13.121 ms  20.258 ms  16.130 ms
 4  100.127.0.101 (100.127.0.101)  16.061 ms  12.736 ms  12.426 ms
 5  * * *
 6  node-16zp.pool-125-24.dynamic.totinternet.net (125.24.217.165)  23.851 ms
    node-16zl.pool-125-24.dynamic.totinternet.net (125.24.217.161)  19.827 ms  19.112 ms
 7  203.113.59.174 (203.113.59.174)  20.575 ms
    203.113.61.242 (203.113.61.242)  26.431 ms
    203.113.59.154 (203.113.59.154)  20.603 ms
 8  hu0-11-0-0.kkm-core-01.totiig.net (203.190.250.209)  21.014 ms
    hu0-10-0-0.toth-core-01.totiig.net (203.190.251.69)  20.535 ms
    hu0-19-0-3.toth-core-01.totiig.net (203.190.251.177)  20.846 ms
 9  in-addr.net (180.180.255.39)  75.601 ms *  76.264 ms
10  * * *
11  * * in-addr.net (203.190.251.87)  43.441 ms
12  * * *
13  * * *
14  * * *

Can anyone make sense of this? :slight_smile: After this output it just seems to be adding rows with stars.

Can anyone make sense of this?

It looks like the problem lies in the network routing of totiig.net (National Telecom Public Company Limited, Bangkok, Thailand).

Just note how a packet traverses that node:

hu0-19-0-3.toth-core-01.totiig.net (203.190.251.177)  20.846 ms

and then bounces back to the same ISP subnet 203.190.251.0/24:

11  * * in-addr.net (203.190.251.87)  43.441 ms

and then it is dead silent going nowhere:

12  * * *
13  * * *
14  * * *

So this is the problem of a particular ISP. It is always a good idea to contact ISP support and send them this trace dump.