> Depends on what you want.
>
> !+[ip-map,port-map] means that the packet does not match both sets (but
> it may match one of the two sets).
>
> +[!ip-map,!port-map] means that the packet does not match either set.
>   
You are right. Come to think of it, when I do not have exclusion (!), 
the comma symbol (,) between sets in brackets indicates logical AND (in 
other words, to have a packet match all sets specified in the brackets 
must also match), so following this:

!+[ipset1,ipset2...ipsetN] should be interpreted as NOT (ipset1 AND 
ipset2 AND ... ipsetN), which is the same as ipset1 OR ipset2 OR ... 
ipsetN - in other words match in either set produces a packet match.

Similarly +[!ipset1,!ipset2...!ipsetN) should be interpreted as (NOT 
ipset1) AND (NOT ipset2) ... AND (NOT ipsetN), which is the same as NOT 
(ipset1 OR ipset2 OR ... ipsetN) - in other words match in either set 
does NOT produce a packet match.

Does your patch reflects the above logic or should I refrain from 
applying it until you fix this?

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