On 11/12/24 01:24, Lew Wolfgang wrote:
IPv6 is certainly less reliable than v4 in my employer's dual-stacked network. Identical hosts running Leap will sometimes not discover their v6 addresses. I've had to configure our ssh servers to listen only on v4, otherwise connection attempts would freeze waiting for a v6 connection.
You may have other issues.
Then there's the problem of rogue routers.
If you're really worried about security, then you need to watch network traffic. Every router will advertise itself.
My phone has v4 and v6 addresses, the v4 is on a carrier-grade NAT.
Is your phone's IPv4 address something like 192.0.0.2? If so you're using 464XLAT. Either way, some form of NAT is still being used.
CIDR, NAT and SNI on v4
You're still using hacks. Also, even CIDR won't provide enough addresses. It's impossible to connect all the world's devices into the IPv4 address space without using hacks and even hacks on hacks. Those hacks add complexity, reliability and security issues.