See https://github.com/Kentik/patricia/
On Wednesday, 16 May 2018 03:38:26 UTC+3, XXX ZZZ wrote:
>
> Hello,
>
> I'm trying to check an IP against a list of several CIDR ranges, so far
> the most obvious way to do it seems to parse both the IP and the cidr
> ranges (ParseCIDR) and then do a net.contain() however, if we have more
> than 1 CIDR we have to loop checking one by one which imho is incredible
> unefficient + slow if the cidr range is big.
>
> Is there any more efficient way of achieving this? I have thought on
> making a map[string]string with all the IPs (within the CIDR) but the
> amount of required memory for big lists goes up to a few GB.
>
> Thanks
>
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