Package: debian-installer Version: 20170615+deb9u1 When entering link local ipv6 addresses with interface suffixes as gateway during the network configuration in the debian installer, the installer detects the address to be malformed. Error message: "The IP address you provided is malformed. It should be in the form x.x.x.x where each 'x' is no larger than 255 (an IPv4 address), or a sequence of blocks of hexadecimal digits separated by colons (an IPv6 address). Please try again." Preseed file from attempting to use the debian installer with its network console to reproduce the error: d-i debian-installer/locale string en_US d-i keyboard-configuration/xkb-keymap select us d-i debconf/priority select critical d-i auto-install/enabled boolean true d-i netcfg/choose_interface select eth0 d-i netcfg/disable_dhcp boolean true d-i netcfg/get_nameservers string dead:beef:aaaa:aaaa::2 d-i netcfg/get_ipaddress string dead:beef:aaaa:aaaa::1 d-i netcfg/get_netmask string ffff:ffff:ffff:ffff:: d-i netcfg/get_gateway string fe80::1%eth0 d-i netcfg/confirm_static boolean true d-i netcfg/get_hostname string somehostname d-i netcfg/get_domain string somedomain d-i network-console/password password <password> d-i network-console/password-again password <password> Entering the same ip address netmask and gateway manually produces the same error. Configuring the same from a shell in the installer with: ip a add dead:beef:aaaa:aaaa::1 dev eth0 ip l set dev eth0 up ip r add default via fe80::1 dev eth0 Produces a functioning network configuration. I suggest the debian installer should be able to deal with link local ipv6 addresses. Cheers, Michael
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