diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index 8b6c187f34..e354e48516 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -479,18 +479,14 @@
specified more than once.
- If the specified address is 0.0.0.0 (for IPv4) or
- [::] (for IPv6), a new address range of the requested size
- is automatically allocated from a system-wide pool of
- unused ranges. The allocated range is checked against all
- current network interfaces and all known network
- configuration files to avoid address range conflicts. The
- default system-wide pool consists of 192.168.0.0/16,
- 172.16.0.0/12 and 10.0.0.0/8 for IPv4, and fc00::/7 for
- IPv6. This functionality is useful to manage a large
- number of dynamically created network interfaces with the
- same network configuration and automatic address range
- assignment.
+ If the specified address is 0.0.0.0 (for IPv4) or ::
+ (for IPv6), a new address range of the requested size is automatically allocated from a
+ system-wide pool of unused ranges. Note that the prefix length must be equal or larger than 8 for
+ IPv4, and 64 for IPv6. The allocated range is checked against all current network interfaces and
+ all known network configuration files to avoid address range conflicts. The default system-wide
+ pool consists of 192.168.0.0/16, 172.16.0.0/12 and 10.0.0.0/8 for IPv4, and fd00::/8 for IPv6.
+ This functionality is useful to manage a large number of dynamically created network interfaces
+ with the same network configuration and automatic address range assignment.