Remove outdated disable_ipv6 docs

rlaager · yuwata · commit f542f3b2ed3c · 2021-02-18T16:51:27.000+09:00
This was changed in commit 482efed, which was released in v243, to only enable and never disable IPv6. Signed-off-by: Richard Laager <rlaager@wiktel.com>
diff --git a/man/systemd.network.xml b/man/systemd.network.xml
@@ -61,12 +61,6 @@
     <filename>/etc/</filename> take precedence over those in <filename>/run/</filename> which in turn
     take precedence over those in <filename>/usr/lib/</filename>. Drop-in files under any of these
     directories take precedence over the main network file wherever located.</para>
-
-    <para>Note that an interface without any static IPv6 addresses configured, and neither DHCPv6
-    nor IPv6LL enabled, shall be considered to have no IPv6 support. IPv6 will be automatically
-    disabled for that interface by writing "1" to
-    <filename>/proc/sys/net/ipv6/conf/<replaceable>ifname</replaceable>/disable_ipv6</filename>.
-    </para>
   </refsect1>
 
   <refsect1>
