On 2018-10-12 15:25, Rick Moen wrote:
> Quoting info at smallinnovations dot nl (info@???):
>
>> I had something similar but with ssh. Some debugging learned that IPv6
>> was preferred but my ISP connection does not have IPv6. After 60
>> seconds
>> ssh time out and changed back to IPv4 and made connection after all.
>> After this discovery I disabled IPv6 on my local network.
>
> This is a common problem and is why you shouldn't test networking
> problems using Web browsers, but rather with simple command-line tools
> such as dig, ping, traceroute, and tcptracroute.
>
> I note that dig has flags '-4' and '-6' to limit DNS resolution to only
> IPv4 or only IPv6, respectively.
> _______________________________________________
>
Thanks for the responses. I suspect that IPv6 might indeed be the
culprit.

Let me start by posting a traceroute to google.com:

$ traceroute google.com
traceroute to google.com (74.125.129.102), 30 hops max, 60 byte packets
1 * * *
2 tge0-0-0.ausdtx2802h.texas.rr.com (66.68.2.205) 45.543 ms 46.092
ms 46.373 ms
3 agg30.ausxtxir02r.texas.rr.com (24.175.42.144) 24.660 ms 25.364 ms
25.750 ms
4 agg22.hstqtxl301r.texas.rr.com (24.175.41.48) 31.765 ms 36.379 ms
35.651 ms
5 ae-1-0.p0.atl90.tbone.rr.com (66.109.1.218) 50.802 ms 44.462 ms
39.178 ms
6 bu-ether12.dllstx976iw-bcr00.tbone.rr.com (66.109.6.39) 45.106 ms
34.283 ms 107.14.19.49 (107.14.19.49) 36.338 ms
7 0.ae1.pr1.dfw10.tbone.rr.com (107.14.17.234) 35.058 ms
0.ae2.pr1.dfw10.tbone.rr.com (107.14.17.236) 27.868 ms 25.589 ms
8 ix-ae-23-0.tcore2.dt8-dallas.as6453.net (66.110.57.97) 32.475 ms
39.941 ms 52.998 ms
9 74.125.50.214 (74.125.50.214) 31.421 ms 34.253 ms 38.467 ms
10 * * *
11 216.239.63.238 (216.239.63.238) 34.677 ms 108.170.226.56
(108.170.226.56) 29.073 ms 108.170.226.182 (108.170.226.182) 29.651 ms
12 108.170.240.145 (108.170.240.145) 29.667 ms 108.170.240.209
(108.170.240.209) 32.095 ms 108.170.252.130 (108.170.252.130) 34.320
ms
13 216.239.59.168 (216.239.59.168) 29.987 ms 108.170.233.117
(108.170.233.117) 30.326 ms 108.170.228.84 (108.170.228.84) 31.091 ms
14 209.85.250.37 (209.85.250.37) 30.081 ms 38.277 ms 35.229 ms
15 209.85.246.182 (209.85.246.182) 56.902 ms 209.85.246.84
(209.85.246.84) 77.541 ms 209.85.246.182 (209.85.246.182) 73.471 ms
16 216.239.56.175 (216.239.56.175) 63.061 ms 216.239.54.65
(216.239.54.65) 61.564 ms 216.239.48.67 (216.239.48.67) 65.893 ms
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 jm-in-f102.1e100.net (74.125.129.102) 168.457 ms 171.191 ms
170.337 ms

Good grief!!! Another trace route eventually got to one of my websites:

$ traceroute stopcta.info
traceroute to stopcta.info (185.203.114.117), 30 hops max, 60 byte
packets
1 * * *
2 tge0-0-0.ausdtx2801h.texas.rr.com (66.68.2.201) 330.761 ms 331.380
ms 331.773 ms
3 agg30.ausutxla01r.texas.rr.com (24.175.42.142) 25.345 ms 26.732 ms
27.302 ms
4 agg22.dllatxl301r.texas.rr.com (24.175.41.46) 37.000 ms 33.044 ms
37.558 ms
5 bu-ether14.dllstx976iw-bcr00.tbone.rr.com (66.109.6.88) 41.860 ms
66.109.1.216 (66.109.1.216) 40.157 ms 41.325 ms
6 66.109.5.121 (66.109.5.121) 31.192 ms 42.090 ms 25.595 ms
7 dls-b21-link.telia.net (62.115.156.208) 27.346 ms 28.104 ms
27.084 ms
8 atl-b22-link.telia.net (80.91.246.74) 49.968 ms 58.985 ms 49.461
ms
9 mai-b1-link.telia.net (62.115.122.53) 69.445 ms 67.043 ms 59.106
ms
10 init7-ic-318278-mai-b1.c.telia.net (62.115.148.55) 70.009 ms
77.143 ms 72.151 ms
11 r2nyc3.core.init7.net (193.47.153.231) 71.850 ms 70.682 ms 78.191
ms
12 r1nyc3.core.init7.net (193.47.153.238) 80.221 ms 73.209 ms 69.531
ms
13 r1nyc2.core.init7.net (193.47.153.234) 84.886 ms 74.355 ms 70.098
ms
14 r1lon2.core.init7.net (77.109.128.14) 140.249 ms 140.124 ms
147.072 ms
15 r1bsl1.core.init7.net (77.109.128.102) 173.037 ms 162.066 ms
164.498 ms
16 r1zrh2.core.init7.net (77.109.128.129) 159.150 ms 152.605 ms
r1bsl3.core.init7.net (82.197.168.18) 160.159 ms
17 r1glb1.core.init7.net (77.109.128.238) 165.343 ms
r1zrh8.core.init7.net (82.197.168.74) 155.252 ms r1glb1.core.init7.net
(77.109.128.238) 171.133 ms
18 empty.init7.net (77.109.141.139) 159.961 ms 156.963 ms 165.937 ms
19 * r1glb1.core.init7.net (77.109.140.205) 156.057 ms 159.736 ms
20 empty.init7.net (77.109.141.139) 165.136 ms
117-114-203-185.place5.ungleich.ch (185.203.114.117) 169.960 ms
empty.init7.net (77.109.141.139) 161.785 ms

I (or rather Evilham and Nico) recently moved my websites to a devuan
IPv6 VPS which is set up to serve IPv4 too through some sort of
server-side magic I don't really understand. I suspect this might be
what triggered things. I am clueless how to test if IPv6 is actually
enabled on my network or how to disable it if it is. Maybe someone can
save me some hours of searching? I really need to work on the refracta
website a bit.

golinux