diff --git a/man/systemd.netdev.xml b/man/systemd.netdev.xml
index fd8031a5fd1..8ccc7c1a5a0 100644
--- a/man/systemd.netdev.xml
+++ b/man/systemd.netdev.xml
@@ -957,22 +957,24 @@
It is used as mark-configured SAD/SPD entry as part of the lookup key (both in data
and control path) in ip xfrm (framework used to implement IPsec protocol).
See
- ip-xfrm — transform configuration for details. It is only used for VTI/VTI6
- tunnels.
+ ip-xfrm — transform configuration for details. It is only used for VTI/VTI6,
+ GRE, GRETAP, and ERSPAN tunnels.
InputKey=
The InputKey= parameter specifies the key to use for input.
- The format is same as Key=. It is only used for VTI/VTI6 tunnels.
+ The format is same as Key=. It is only used for VTI/VTI6, GRE, GRETAP,
+ and ERSPAN tunnels.
OutputKey=
The OutputKey= parameter specifies the key to use for output.
- The format is same as Key=. It is only used for VTI/VTI6 tunnels.
+ The format is same as Key=. It is only used for VTI/VTI6, GRE, GRETAP,
+ and ERSPAN tunnels.
@@ -1048,8 +1050,8 @@
SerializeTunneledPackets=
- Takes a boolean. If set to yes, then packets are serialized. Only applies for ERSPAN tunnel.
- When unset, the kernel's default will be used.
+ Takes a boolean. If set to yes, then packets are serialized. Only applies for GRE,
+ GRETAP, and ERSPAN tunnels. When unset, the kernel's default will be used.