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-rw-r--r--nixos/doc/manual/from_md/release-notes/rl-2111.section.xml22
1 files changed, 20 insertions, 2 deletions
diff --git a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
index 58b7c1e802d..a11baa91dea 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
@@ -26,8 +26,26 @@
       </listitem>
       <listitem>
         <para>
-          <literal>iptables</literal> now uses
-          <literal>nf_tables</literal> backend.
+          <literal>iptables</literal> is now using
+          <literal>nf_tables</literal> under the hood, by using
+          <literal>iptables-nft</literal>, similar to
+          <link xlink:href="https://wiki.debian.org/nftables#Current_status">Debian</link>
+          and
+          <link xlink:href="https://fedoraproject.org/wiki/Changes/iptables-nft-default">Fedora</link>.
+          This means, <literal>ip[6]tables</literal>,
+          <literal>arptables</literal> and <literal>ebtables</literal>
+          commands will actually show rules from some specific tables in
+          the <literal>nf_tables</literal> kernel subsystem.
+        </para>
+      </listitem>
+      <listitem>
+        <para>
+          systemd got an <literal>nftables</literal> backend, and
+          configures (networkd) rules in their own
+          <literal>io.systemd.*</literal> tables. Check
+          <literal>nft list ruleset</literal> to see these rules, not
+          <literal>iptables-save</literal> (which only shows
+          <literal>iptables</literal>-created rules.
         </para>
       </listitem>
       <listitem>