> running out of private address space
Classic merger "solution".
Company A uses 10/8 Company B uses 10/8, company A buys company B and orders new subsidiary B to renumber into 11/8 "All you have to do is change every first octet to 11"
Classic merger "solution".
Company A uses 10/8 Company B uses 10/8, company A buys company B and orders new subsidiary B to renumber into 11/8 "All you have to do is change every first octet to 11"
In both cases RFC1918 was used throughout their global network and while not fully used, had become highly fragmented over time.
If your ISP doesn't provide it, get one that does. They should allocate you a /56 by default per connection, if not something larger like a /48 if you have multiple locations.
Subnet the /48 for each connection, subnet each /56 into /64 subnets. reserve one of the /56's for site-to-site if needed.
Done.
How would you "simply add two top octets"? The address fields in the IPv4 header are a fixed size of 32 bits. Every time this is discussed, someone comes up with this suggestion to "just make the addresses longer and change nothing else", but there's no way to make the addresses longer without changing something else. And that's before considering compatibility with older hosts or routers; how would an old host talk to a new host, or two new hosts talk one to another with an old router in the path? In the end, what you'd have would be two separate networks, with some hosts being in both networks, which is exactly what we have with IPv4 and IPv6.
Yeah, it works well enough until it doesn't: I love when VoIP calls have one-way audio or when I have to map ports because the traversal method used by this P2P app is not working. When run at the ISP level it's even more fun: remember when wikipedia blocked the whole Qatar?
Screw DNS. Screw the recommendation to stay away from IP's. If it's important enough to be on the network, it's important enough to have a static IP.
And by "stupid addressing scheme" do you mean it's too big, or what? You can ignore all that stuff with mac addresses and make all your addresses go like prefix:subnet::1 prefix:subnet::2 prefix:subnet::3 if you want to.
Every networking problem in the world can be solved with more NAT or more encapsulation :)
https://www.cisco.com/c/en/us/support/docs/ip/network-addres...