I am not checking my emails until Nov 14th, 2025. Thanks, Samaneh On Nov 6, 2025, at 3:53 PM, Marco Moock via NANOG <nanog@lists.nanog.org> wrote: On 06.11.2025 12:13 Vasilenko Eduard via NANOG <nanog@lists.nanog.org> wrote: Nope. It is an extremally complex bunch of protocols on the 1st hope (between the computer and the router). If it was be like you said - IPv4 would be down already. It already is in certain networks. Various ISPs do DS-Lite - no IPv4 to the customer - IPv6 with tunneled IPv4 if needed. Cellular ISPs only give IPv6 with NAT64 or CLAT. -- kind regards Marco Send spam to abfall1762427614@stinkedores.dorfdsl.de _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/MG7OT54U...