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man: clarify RoutingPolicyRule.TypeOfService docs

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Brad Fitzpatrick 2023-04-17 14:36:33 -07:00 committed by Yu Watanabe
parent ebd6384d57
commit cd18d98349
1 changed files with 10 additions and 1 deletions
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11
man/systemd.network.xml
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@ -1247,7 +1247,16 @@ allow my_server_t localnet_peer_t:peer recv;</programlisting>
<varlistentry>
<term><varname>TypeOfService=</varname></term>
<listitem>
<para>Takes a number between 0 and 255 that specifies the type of service to match.</para>
<para>
This specifies the Type of Service (ToS) field of packets to match;
it takes an unsigned integer in the range 0…255.
The field can be used to specify precedence (the first 3 bits) and ToS (the next 3 bits).
The field can be also used to specify Differentiated Services Code Point (DSCP) (the first 6 bits) and
Explicit Congestion Notification (ECN) (the last 2 bits).
See <ulink url="https://en.wikipedia.org/wiki/Type_of_service">Type of Service</ulink>
and <ulink url="https://en.wikipedia.org/wiki/Differentiated_services">Differentiated services</ulink>
for more details.
</para>
</listitem>
</varlistentry>