That d-i behaviour agrees with how the kernel interprets those: https://www.kernel.org/doc/Documentation/serial-console.txt -- i. e. kernel messages appear on all "console="s, but the last one defines what /dev/console points to.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1615021 Title: Unable to network boot Ubuntu 16.04 installer normally on Briggs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/busybox/+bug/1615021/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs