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-rw-r--r--doc/nft.xml7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/nft.xml b/doc/nft.xml
index d3213d02..4e2730f6 100644
--- a/doc/nft.xml
+++ b/doc/nft.xml
@@ -2836,6 +2836,11 @@ filter prerouting meta mark set 0xdead fib daddr . mark type vmap { blackhole :
<entry>Routing nexthop</entry>
<entry>ipv4_addr/ipv6_addr</entry>
</row>
+ <row>
+ <entry>mtu</entry>
+ <entry>TCP maximum segment size of route</entry>
+ <entry>integer (16 bit)</entry>
+ </row>
</tbody>
</tgroup>
</table>
@@ -4270,6 +4275,8 @@ ip forward ip dscp set 42
<title>change tcp mss</title>
<programlisting>
tcp option maxseg size set 1360
+# set a size based on route information:
+tcp option maxseg size set rt mtu
</programlisting>
</example>
</para>