Comment # 1 on bug 1099701 from Reinhard Max

This was an intentional change to get the DHCP client in conformance with
RFC4361.
For workarounds with non-conforming DHCP server implementations, see:

https://github.com/openSUSE/wicked/wiki/FAQ#q-why-is-wicked-unable-to-provide-a-dhcpv4-lease-on-newer-versions