diff --git a/pbr/1.2.2/README.md b/pbr/1.2.2/README.md
index b47796e..967b31f 100644
--- a/pbr/1.2.2/README.md
+++ b/pbr/1.2.2/README.md
@@ -103,6 +103,7 @@
     - [Warning: Please set 'dhcp.lan.force=1'](#warning-please-set-dhcplanforce1)
     - [Warning: Internal Version Mismatch](#warning-internal-version-mismatch)
     - [Warning: Incompatible DHCP Option 6](#warning-incompatible-dhcp-option-6)
+    - [Warning: Unknown Gateway for device 'XX'](#warning-unknown-gateway-for-device-xx)
   - [Thanks](#thanks)
 
 
@@ -1179,6 +1180,12 @@ If you have the matching versions of the `pbr` and `luci-app-pbr` installed you
 
 The `pbr` package now checks for incompatible DHCP Option 6 on start if resolver_set is used.
 
+### Warning: Unknown Gateway for device 'XX'
+
+This usually is a transient warning and related to `WARNING: Uplink/WAN interface is still down, going back to boot mode`.  
+When an interface is not up there is no gateway, normally PBR will restart if the interface is up and the warning should be gone.  
+So you can ignore this warning if PBR restarts afterwards and the warning is gone.
+
 ## Thanks
 
 I'd like to thank everyone who helped by providing testing and feedback on this service. Without contributions from [@hnyman](https://github.com/hnyman), [@dibdot](https://github.com/dibdot), [@danrl](https://github.com/danrl), [@tohojo](https://github.com/tohojo), [@cybrnook](https://github.com/cybrnook), [@nidstigator](https://github.com/nidstigator), [@AndreBL](https://github.com/AndreBL), [@dz0ny](https://github.com/dz0ny), [@tew42](https://github.com/tew42), [bogorad](https://forum.openwrt.org/u/bogorad), rigorous testing/bugreporting by [@dziny](https://github.com/dziny), [@bluenote73](https://github.com/bluenote73), [@buckaroo](https://github.com/pgera), [@Alexander-r](https://github.com/Alexander-r), [@n8v8R](https://github.com/n8v8R), [psherman](https://forum.openwrt.org/u/psherman), [@Vale-max](https://github.com/Vale-max), [@aliicex](https://github.com/aliicex), [dscpl](https://forum.openwrt.org/u/dscpl), [pesa1234](https://forum.openwrt.org/u/pesa1234) and multiple contributions from [@egc112](https://github.com/egc112), [@bigsmile74](https://github.com/bigsmile74), [@dl12345](https://github.com/dl12345) and [trendy](https://forum.openwrt.org/u/trendy) and feedback from other OpenWrt users it wouldn't have been possible. WireGuard/IPv6 support is courtesy of [IVPN](https://www.ivpn.net/).