48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
From ebd8a5bc9259cc7a95460ee835df50cef0c32aae Mon Sep 17 00:00:00 2001
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From: Lukas Javorsky <ljavorsk@redhat.com>
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Date: Wed, 12 Apr 2023 17:52:14 +0000
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Subject: [PATCH] resolv.conf.5: Add option no-aaaa to the resolv.conf manual
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page
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---
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man5/resolv.conf.5 | 23 +++++++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/man5/resolv.conf.5 b/man5/resolv.conf.5
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index 93c6b47..7c61783 100644
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--- a/man5/resolv.conf.5
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+++ b/man5/resolv.conf.5
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@@ -189,6 +189,29 @@ which causes round-robin selection of name servers from among those listed.
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This has the effect of spreading the query load among all listed servers,
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rather than having all clients try the first listed server first every time.
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.TP
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+.B no\-aaaa
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+.\" f282cdbe7f436c75864e5640a409a10485e9abb2
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+Sets
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+.B RES_NOAAAA
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+in
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+.IR _res.options ,
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+which suppresses AAAA queries made by the stub resolver,
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+including AAAA lookups triggered by NSS-based interfaces such as
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+.BR getaddrinfo (3).
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+Only DNS lookups are affected: IPv6 data in
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+.BR hosts (5)
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+is still used,
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+.BR getaddrinfo (3)
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+with
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+.B AI_PASSIVE
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+will stillproduce IPv6 addresses,
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+and configured IPv6 name servers are still used.
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+To produce correct Name Error (NXDOMAIN) results,
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+AAAA queries are translated to A queries.
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+This option is intended preliminary for diagnostic purposes,
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+to rule out that AAAA DNS queries have adverse impact.
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+It is incompatible with EDNS0 usage and DNSSEC validation by applications.
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+.TP
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.B no\-check\-names
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.\" since glibc 2.2
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Sets
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--
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2.39.2
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