The package golang-github-mdlayher-dhcp6 0.0~git20190311.2a67805-2 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-mdlayher-dhcp6 -- More information about golang-github-mdlayher-dhcp6: http://pkg.kali.org/pkg/golang-github-mdlayher-dhcp6