Writing filters that detect intersection between a prefix and a prefix set

[zx at zxinc.org]

Hello,

I have a prefix set like [ 192.168.1.0/24+, 192.168.2.0/24+ ] and I want to write a filter that
filters all prefixes intersects with the prefix set and accepts all others, that is,
accepts 192.168.0.0/24, 192.168.3.0/24, 10.0.0.0/8,
rejects 192.168.1.1/32, 192.168.1.0/24, 192.168.2.0/24, 192.168.2.0/23, 192.168.0.0/16, 192.0.0.0/8,

Anyone who knows how to write such a filter? Is it possible?

Thanks.

----
zx

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