I have reposted the bug to upstream, see https://github.com/NetworkConfiguration/dhcpcd/issues/149
- Bug#1019100: dhcpcd5: dhcpcd fails to detect link-loca... Wang Jian
- Bug#1019100: dhcpcd5: dhcpcd fails to detect link... Martin-Éric Racine
I have reposted the bug to upstream, see https://github.com/NetworkConfiguration/dhcpcd/issues/149