Fix overflow for /0 #323
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Fix overflow for /0 #323
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Previously it would make a prefix, add that to the start, and check whether the end is still smaller than the starting address. This can lead to situations where e.g. 0.0.0.0 - 255.255.255.255 would overflow, as it would try to go up to 256.0.0.0, which the u32 cannot contain.
These changes add a check for the last address to fix that.
(Relates to NLnetLabs/krill#1251)