man: mention the meaning of may-fail in the nm-online man page

Commit b2a0738765 ('man: improve manual page for nm-online') removed
the explanation of how may-fail can be used to wait for a specific
address family during boot. I found that part useful.

Note: this branch doesn't have commit 1e5206414a ('device: don't
delay startup complete for pending-actions "autoconf", "dhcp4" and
"dhcp6"') and so the text is different from branch nm-1-22 and later.

https://bugzilla.redhat.com/show_bug.cgi?id=1825666
(cherry picked from commit 25583de20b)
(cherry picked from commit 02a31e71af)
(cherry picked from commit 74c4494b3b)
This commit is contained in:
Beniamino Galvani 2020-04-23 17:24:22 +02:00
parent 9430c693fe
commit 0417a5b4d1

View file

@ -68,6 +68,13 @@
and don't order them with respect to <literal>network-online.target</literal>
at all.
</para>
<para>By default NetworkManager waits for IPv4 dynamic addressing to complete
but does not wait for the <literal>auto</literal> IPv6 dynamic addressing. To
wait for IPv6 addressing to complete, either (1) change the network
connection's IPv6 <literal>may-fail</literal> setting to <literal>no</literal>,
and/or (2) change the IPv6 addressing method to <literal>manual</literal> or
<literal>dhcp</literal>, to indicate that IPv6 connectivity is expected.</para>
</refsect1>
<refsect1 id='options'><title>Options</title>