dhcpcd (1:10.1.0-3) unstable; urgency=medium Please note that, as per upstream defaults, SLAAC uses privacy extensions. This can be changed to use EUI64 (hwaddr) instead via . Given how dhcpcd handles IPv4 and IPv6 stacks simultaneously, no separate inet6 line is needed in as shown below. Since Debian 12 (Bookworm) dhcpcd uses Predictable Network Interface Names. Run 'sudo dmesg | grep -i renamed' to list available interface names. Before (dhclient for IPv4 and kernel SLAAC for IPv6): iface lan0 inet dhcp iface lan0 inet6 auto After (dhcpcd handles DHCPv4, DHCPv6, IPv4LL and SLAAC): iface enp4s0 inet dhcp -- Martin-Éric Racine Thu, 23 Jan 2025 16:16:52 +0200