QUESTION: In IPv4, do the private addresses of range 10 series, 172 series, and 192 series have a default subnet mask?
For example: 10 series belongs to Class A IP addressing, but can we use default subnet mask of Class C 255.255.255.0 for it?
With IPv6, there are no private address ranges defined anymore. NAT is something we should get rid of, because it breaks the end-to-end model. With IPv6 there are new address types used. For instance, you could use the link-local or site-local IPv6 address for internal communication that doesn't have to be routed to the Internet.
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