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man: clarify that global search domains apply to global servers, not all interfaces

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Fixes #19257.
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Zbigniew Jędrzejewski-Szmek 2021-06-11 09:13:25 +02:00 committed by Luca Boccassi
parent 7ad9bad71b
commit dbb3b26f1b
1 changed files with 8 additions and 7 deletions
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15
man/systemd-resolved.service.xml
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@ -138,13 +138,14 @@
<listitem><para>Queries for the address records (A and AAAA) of single-label non-synthesized names are
resolved via unicast DNS using search domains. For any interface which defines search domains, such
look-ups are routed to that interface, suffixed with each of the search domains defined on that
interface in turn. When global search domains are defined, such look-ups are routed to all interfaces,
suffixed by each of the global search domains in turn. Additionally, lookup of single-label names via
unicast DNS may be enabled with the <varname>ResolveUnicastSingleLabel=yes</varname> setting. The
details of which servers are queried and how the final reply is chosen are described below. Note that
this means that address queries for single-label names are never sent out to remote DNS servers by
default, and resoulution is only possible if search domains are defined.</para></listitem>
look-ups are routed to the servers defined for that interface, suffixed with each of those search
domains. When global search domains are defined, such look-ups are routed to the global servers. For
each search domain, queries are performed by suffixing the name with each of the search domains in
turn. Additionally, lookup of single-label names via unicast DNS may be enabled with the
<varname>ResolveUnicastSingleLabel=yes</varname> setting. The details of which servers are queried and
how the final reply is chosen are described below. Note that this means that address queries for
single-label names are never sent out to remote DNS servers by default, and resoulution is only
possible if search domains are defined.</para></listitem>
<listitem><para>Multi-label names with the domain suffix <literal>.local</literal> are resolved using
MulticastDNS on all local interfaces where MulticastDNS is enabled. As with LLMNR, IPv4 address lookups