This is just a short note to remind me, how to configure a link-local IPv6 address in the ssh-config
#~/.ssh/config
HOST raspberry
USER pi
HOSTNAME fe80::0001%%eth0
AddressFamily inet6
Remember to put two precent signs, otherwise you might get errors like
percent_expand: unknown key %e
percent_expand: unknown key %w
percent_expand: unknown key %t
IPv6 for the win!