On Mon, Feb 19, 2024 at 9:17 AM William Herrin <bill@herrin.us> wrote:
There's also the double-ISP loss scenario that causes Joe to lose all global-scope IP addresses. He can overcome that by deploying ULA addresses (a third set of IPv6 addresses) on the internal hosts, but convincing the internal network protocols to stay on the ULA addresses is wonky too.
In the real world today, most applications seem to use mDNS and link-local addresses to keep this connectivity working. (I am guessing Joe's Taco Shop uses something like Square, and just needs his register to talk to his printer. This already works with mDNS and link-locals today.) -- Hunter Fuller (they) Router Jockey VBH M-1C +1 256 824 5331 Office of Information Technology The University of Alabama in Huntsville Network Engineering