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Pihole installs, starts, and DNS resolution works both from the command line, and from remote queries
Install gets this far and then borks:
[i] Restarting services…
[✓] Enabling pihole-FTL service to start on reboot…
[✓] Starting pihole-FTL service…
[✓] Deleting existing list cache
[i] Pi-hole blocking is enabled
[✗] DNS resolution is currently unavailable
[✗] DNS resolution is not available
Can confirm from using "hosts <domain_name> on the command line that there is, indeed, no DNS resolution available locally. Queries from other machines using "dig @<ip_address> also fail with server unreachable.
This is on a new Raspberry Pi, running a fully up2date OS. More confoundingly, I have an identical installation done from the same raspbian image on another identical Pi, and it installed just fine, and is running happily.
I’ve also done a complete reinstall of PiHole, and a complete OS re-image and attempted re-install of PiHole. Fails at exactly the same place every time. I’ve tried manually adding a working DNS server to /etc/resolve.conf in-between the first and second attempt by the installer to get DNS resolution, to no avail.
I’ve also googled around a bit and tried the various solutions that seem to have worked to varying degrees for other people, and still no luck.