APF invalid mask `255' specified

I have recently noticed that when I restart APF I get the following errors:

iptables v1.2.8: invalid mask `255' specified
Try `iptables -h' or 'iptables --help' for more information.

Can anyone help in explaining how to fix this issue? I am under the assumption that 255 is a vailid mask.

 

 

 

 

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