This bug seems releated to 948217 and several others. In my case, during a netboot install I have an IPv4 DHCP assigned address and IPv6 global addresses assigned by SLAAC. This then ends up with two iface entries in /e/n/interfaces:
iface eth0 inet dhcp
iface eth0 inet6 auto
The ifblacklist_migrate.sh script locates and disables the first entry, but not the second (and I don't think it has a way of knowing this is SLAAC so can't disable it?)
This bug seems releated to 948217 and several others. In my case, during a netboot install I have an IPv4 DHCP assigned address and IPv6 global addresses assigned by SLAAC. This then ends up with two iface entries in /e/n/interfaces:
iface eth0 inet dhcp
iface eth0 inet6 auto
The ifblacklist_ migrate. sh script locates and disables the first entry, but not the second (and I don't think it has a way of knowing this is SLAAC so can't disable it?)