Thanks to all who have chipped in with suggestions and ideas.

I had hoped for a quick fix on this. But I fear it has run on rather long on an issue that is only marginally related to Raku programming per se. So I am ready to close this thread out here and take the matter up else where -- starting with Comcast tech support.

I have discovered that if I reboot my Comcast router, I can freely load pages from docs.raku.org, as many as I want, for about 20-30 minutes. Then the problem begins, affecting all machines on my lan, and continuing until I reboot the router again.

While I pursue a solution elsewhere, I can get by just fine accessing docs.raku.org pages via the Internet Archive.

Cheers,
David