So how do I go about diagnosing this failure to access docs.raku.org? It _does_ seem to be related to access through my Comcast router and network (access via my cloud server and via cell data both work fine). It does _not_ seem to be dependent on IPV6 vs IPV4.
Are you in prison? (That's a joke.) I'm glad you offer the example, because the raku target makes a good canary in coalmine for whether you can do anything with the internet, whether one is 'alive' in some sense. This was my experience from western US with a linux notebook:
$ wget -r https://docs.raku.org
...
--2021-06-25 19:16:36-- https://docs.raku.org/css/app.css?v=7
Reusing existing connection to docs.raku.org:443.
HTTP request sent, awaiting response... 200 OK
Length: 34556 (34K) [text/css]
Saving to: ‘docs.raku.org/css/app.css?v=7’
docs.raku.org/css/a 100%[===================>] 33.75K --.-KB/s in
+ 0.001s
2021-06-25 19:16:37 (53.8 MB/s) - ‘docs.raku.org/css/app.css?v=7’ save
+d [34556/34556]
FINISHED --2021-06-25 19:16:37--
Total wall clock time: 7m 24s
Downloaded: 1719 files, 67M in 7.1s (9.41 MB/s)
$
You talk about your router. I would definitely give it a hard start to rule out malware/disfunction in that realm. My $.02
Happy Friday....