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docs: administration: networking: note DNS lookups are bounded by net.connect_timeout - #2798
Clarified that net.connect_timeout also limits DNS lookup time with the asynchronous resolver. Values of 0 or less disable this limit, and the LEGACY resolver is not affected.
The networking documentation now states that net.connect_timeout bounds UDP and TCP DNS lookups when the asynchronous resolver is used. It also describes how non-positive values and the LEGACY resolver affect that deadline.
Changes: DNS timeout documentation
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Summary
Document DNS timeout behavior administration/networking.md
The description specifies that the timeout bounds UDP and TCP DNS lookups for the asynchronous resolver. Values of 0 or less disable the DNS deadline. The LEGACY resolver is not bounded by this timeout.
Users setting net.connect_timeout to zero to disable DNS deadlines may instead see immediate DNS timeout behavior; correct the documentation before relying on it.
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The title clearly identifies the documentation change and accurately states that DNS lookups are bounded by net.connect_timeout.
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Inline comments:
Review comments at @administration/networking.md:
- Line 15: Update the net.connect_timeout documentation to remove the claim that
all non-positive values disable the asynchronous DNS deadline; clarify that a
value of 0 creates a zero-duration UDP DNS timer that can expire immediately,
while preserving the UDP/TCP scope and the LEGACY resolver qualification.
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administration/networking.md
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eschabell
changed the title
administration: networking: note DNS lookups are bounded by net.connect_timeout
docs: administration: networking: note DNS lookups are bounded by net.connect_timeout
Oct 28, 2026
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Signed-off-by: Eric D. Schabell eric@schabell.org
Summary by CodeRabbit
net.connect_timeoutalso limits DNS lookup time with the asynchronous resolver. Values of0or less disable this limit, and theLEGACYresolver is not affected.