Note for the unfamiliar that ISP (CG) NAT is not at all universal, nor always mandatory when initially present; my past several carriers all issued public IPv4

Note for the unfamiliar that ISP (CG) NAT is not at all universal, nor always mandatory when initially present; my past several carriers all issued public IPv4 and public IPv6 /64 or greater that were accessible if I set the appropriate settings. Caveats apply; i.e. the AT&T BGW320 routers seem to cap at 8192 connections even when in bridging mode. Such are the tradeoffs of buying residential rather than business service. (The else-described proxies can be a cost-effective counter to this and other such concerns, i.e. dynamic IP assignments versus dyndns update intervals.)