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man/systemd.network: reword description of MulticastIGMPVersion=

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Zbigniew Jędrzejewski-Szmek
2025-05-28 15:31:19 +02:00
parent f56d9b82b1
commit acf3bdf813
1 changed files with 8 additions and 7 deletions
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15
man/systemd.network.xml
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@@ -1035,14 +1035,15 @@ DuplicateAddressDetection=none</programlisting></para>
<filename>/proc/sys/net/ipv4/conf/<replaceable>INTERFACE</replaceable>/force_igmp_version</filename>.
Takes one of <literal>no</literal>,
<literal>v1</literal>, <literal>v2</literal>, or <literal>v3</literal>.
When <literal>no</literal>, no enforcement of an IGMP version will be applied, IGMPv1/v2 fallback are allowed, will back to
IGMPv3 mode again if all IGMPv1/v2 Querier Present timer expire.
When <literal>v1</literal>, use of IGMP version 1 will be enforced, and IGMPv1 report will be replied even if IGMPv2/v3
When <literal>no</literal>, no enforcement of an IGMP version is applied. IGMPv1/v2 fallbacks are allowed, and
<command>systemd-networkd</command> will return to
IGMPv3 mode after all IGMPv1/v2 Querier Present timers have expired.
When <literal>v1</literal>, use of IGMP version 1 is enforced. An IGMPv1 report will be returned even if IGMPv2/v3
queries are received.
When <literal>v2</literal>, use of IGMP version 2 will be enforced, and IGMPv2 report will be replied if an IGMPv2/v3 query
is received, but fallback to IGMPv1 if an IGMPv1 query is received.
When <literal>v3</literal>, use of IGMP version 3 will be enforced, and the same reaction will be done as <literal>no</literal>.
Defaults to unset, and the sysctl value will be unchanged.
When <literal>v2</literal>, use of IGMP version 2 is enforced. An IGMPv2 report will be returned if an IGMPv2/v3 query
is received. <command>systemd-networkd</command> will fall back to IGMPv1 if an IGMPv1 query is received.
When <literal>v3</literal>, use of IGMP version 3 is enforced, and the response is the same as with <literal>no</literal>.
Defaults to unset — the sysctl is not set.
</para>
<xi:include href="version-info.xml" xpointer="v257"/>