btrfs: document df weirdness and how to better get usage

[pve-docs.git] / pve-network.adoc

diff --git a/pve-network.adoc b/pve-network.adoc
index 34cc6c8ea78e808ade8f99384b568e78452778fb..37667b8366880cb9a574d011723a5b99c425e397 100644 (file)
--- a/pve-network.adoc
+++ b/pve-network.adoc
@@ -38,9 +38,6 @@ Reload Network with ifupdown2
 With the optional `ifupdown2` network managing package you also can reload the
 network configuration live, without requiring a reboot.
 
-NOTE: 'ifupdown2' cannot understand 'OpenVSwitch' syntax, so reloading is *not*
-possible if OVS interfaces are configured.
-
 Since {pve} 6.1 you can apply pending network changes over the web-interface,
 using the 'Apply Configuration' button in the 'Network' panel of a node.
 
@@ -551,6 +548,25 @@ iface vmbr0 inet manual
 
 ----
 
+Disabling IPv6 on the Node
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+{pve} works correctly in all environments, irrespective of whether IPv6 is
+deployed or not. We recommend leaving all settings at the provided defaults.
+
+Should you still need to disable support for IPv6 on your node, do so by
+creating an appropriate `sysctl.conf (5)` snippet file and setting the proper
+https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt[sysctls],
+for example adding `/etc/sysctl.d/disable-ipv6.conf` with content:
+
+----
+net.ipv6.conf.all.disable_ipv6 = 1
+net.ipv6.conf.default.disable_ipv6 = 1
+----
+
+This method is preferred to disabling the loading of the IPv6 module on the
+https://www.kernel.org/doc/Documentation/networking/ipv6.rst[kernel commandline].
+
 ////
 TODO: explain IPv6 support?
 TODO: explain OVS