uBlock Origin Legacy DNS prefetching
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Michaell
- Lunatic

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- Joined: 2018-05-26, 18:13
uBlock Origin Legacy DNS prefetching
Does "Don't disable DNS prefetching" mean it leaves that up to the browser setting? (I want DNS and all forms of prefetching blocked unless we can allow specific source and target pairs.)
Win10home(1709), PM34.0.1-portable as of Jan. 22, 2026
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UCyborg
- Astronaut

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- Location: Slovenia
Re: uBlock Origin Legacy DNS prefetching
Yes, I changed that part because of the discussion here.
Does anyone want a separate switch badly also in uBO's GUI?
Does anyone want a separate switch badly also in uBO's GUI?
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back2themoon
- Knows the dark side

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- Joined: 2012-08-19, 20:32
Re: uBlock Origin Legacy DNS prefetching
We are still talking about DNS prefetching, right? Isn't that switch already present in UBO? (first setting under Privacy)
What has recently changed was the default Pale Moon setting, which was getting toggled by uBO's default setting (which was now different).
Pale Moon: DNS prefetching = ON
uBO = OFF
My only suggestion would be to conform uBO's default setting with Pale Moon's. If anyone wants to change it, it's best done manually to avoid confusion. (either in uBO or about:config - shouldn't matter). Or wait, I think you already changed the default in your recent version? (thanks again)
What has recently changed was the default Pale Moon setting, which was getting toggled by uBO's default setting (which was now different).
Pale Moon: DNS prefetching = ON
uBO = OFF
My only suggestion would be to conform uBO's default setting with Pale Moon's. If anyone wants to change it, it's best done manually to avoid confusion. (either in uBO or about:config - shouldn't matter). Or wait, I think you already changed the default in your recent version? (thanks again)
Improve Pale Moon performance • Safe Mode / clean profile test info
How to auto-fill passwords • How to apply user agent overrides
Information to include when asking for support
Windows 10 Pro x64 (W11: hard pass)
How to auto-fill passwords • How to apply user agent overrides
Information to include when asking for support
Windows 10 Pro x64 (W11: hard pass)
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UCyborg
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Re: uBlock Origin Legacy DNS prefetching
The checkbox in uBO Disable pre-fetching (to prevent any connection for blocked network requests) doesn't touch network.dns.disablePrefetch perference anymore, which is tied to the checkbox you find in Pale Moon's preferences dialog (Prefetch DNS lookups).
Note that the checkbox in uBO was only meant to enforce disablement of prefetching (web content), if you turn the checkbox in uBO off, it won't actually enable prefetching in Pale Moon, it would only do that if browser per-fetched by default or you turned prefetching on manually by fiddling in about:config. Pale Moon does not prefetch by default.
Edit: I edited the post bunch of times to make it clear which checkbox is talked about.
Note that the checkbox in uBO was only meant to enforce disablement of prefetching (web content), if you turn the checkbox in uBO off, it won't actually enable prefetching in Pale Moon, it would only do that if browser per-fetched by default or you turned prefetching on manually by fiddling in about:config. Pale Moon does not prefetch by default.
Edit: I edited the post bunch of times to make it clear which checkbox is talked about.
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UCyborg
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back2themoon
- Knows the dark side

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- Joined: 2012-08-19, 20:32
Re: uBlock Origin Legacy DNS prefetching
Perfect, thanks for the clarification.
Improve Pale Moon performance • Safe Mode / clean profile test info
How to auto-fill passwords • How to apply user agent overrides
Information to include when asking for support
Windows 10 Pro x64 (W11: hard pass)
How to auto-fill passwords • How to apply user agent overrides
Information to include when asking for support
Windows 10 Pro x64 (W11: hard pass)
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Donieck69
- Hobby Astronomer

- Posts: 19
- Joined: 2024-05-18, 10:35
Re: uBlock Origin Legacy DNS prefetching
Hi, I'm learning PHP and Javascript. Will i help you in improving uBlock Origin for Firefox legacy?
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Donieck69
- Hobby Astronomer

- Posts: 19
- Joined: 2024-05-18, 10:35
Re: uBlock Origin Legacy DNS prefetching
I forked https://github.com/Donieck/uBlockUXP, so maybe I will improve it, but I still lerninng PHP and Javascript. Suggestions nice seeing.