On Sun, 10 Aug 2025 18:53:34 +0200 =?utf-8?q?Marvin_G=C3=BClker?= <[email protected]> wrote: > Package: ifupdown > Version: 0.8.44 > Severity: normal > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > I just upgraded to Debian Trixie. The release notes say that > isc-dhcp-client is deprecated and should be replaced with dhcpcd-base. > I tried, but it appears to be incompatible with my network > configuration, which uses stateful DHCPv6. This is on a server which > uses the venerable ifupdown with this configuration in > /etc/network/interfaces: > > # This file describes the network interfaces available on your system > # and how to activate them. For more information, see interfaces(5). > > source /etc/network/interfaces.d/* > > # The loopback network interface > auto lo > iface lo inet loopback > > # The primary network interface > allow-hotplug enp2s0 > iface enp2s0 inet dhcp > iface enp2s0 inet6 dhcp > > Trying to raise enp2s0 on boot fails with this log:
With dhcpcd one only needs one line to handle both IPv4 and IPv6. Can you try commenting either the inet or intet6 line and see if this fixes it? Martin-Éric
