30 Jan
1995
30 Jan
'95
7:27 p.m.
This seems brain dead. I think the intent of 1597 was to say here are some numbers you can go play with privately. Since they are private they should never appear on the public Internet, anywhere, ever. If any router on the public Internet sees a packet to (or from) a 1597 network it can throw it in the bit bucket and forget it.
As long as you say "can" rather than "must". Right now these sort of packets will follow the default route. Dino