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How do I convince Firefox on macOS to take an internal and .local address instead of search?

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Life is macOS
Life is macOS
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When I enter either of these internal addresses, it fails:

http://dfa shows: Hmm. We’re having trouble finding that site. We can’t connect to the server at dfa.

http://rpi-m92a-ad82:3003/ Hmm. We’re having trouble finding that site. We can’t connect to the server at rpi-m92a-ad82.

Both issues are similar, but neither work as expected.

dfa is an alias for a longer name such as dfa.int.example.com. The local DNS (/etc/resolv.conf) will reply with the correct IP if asked for "dfa" but not "dfa." due to the dot forcing the Fully Qualified Domain Name to be "dfa." only. We wish to opt to leave off the rest of the url.

For the raspberry pi, it is a mDNS. So doing "rpi-m92a-ad82.local" works. But this used to work long ago, and ended 10 or 20 updates ago as best as I can remember.

How can I convince Firefox to query DNS, then query mDNS, and if both fail perform a search?

When I enter either of these internal addresses, it fails: http://dfa shows: Hmm. We’re having trouble finding that site. We can’t connect to the server at dfa. http://rpi-m92a-ad82:3003/ Hmm. We’re having trouble finding that site. We can’t connect to the server at rpi-m92a-ad82. Both issues are similar, but neither work as expected. dfa is an alias for a longer name such as dfa.int.example.com. The local DNS (/etc/resolv.conf) will reply with the correct IP if asked for "dfa" but not "dfa." due to the dot forcing the Fully Qualified Domain Name to be "dfa." only. We wish to opt to leave off the rest of the url. For the raspberry pi, it is a mDNS. So doing "rpi-m92a-ad82.local" works. But this used to work long ago, and ended 10 or 20 updates ago as best as I can remember. How can I convince Firefox to query DNS, then query mDNS, and if both fail perform a search?

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