Comment # 4 on bug 972471 from Pawel Wieczorkiewicz

I believe that IPv6 related delay got fixed by the following commit:
https://github.com/openSUSE/wicked/commit/079fa6210cbb7f5dee687aba21f50d0e19f8956b
with version 0.6.30.

What wicked version are you testing on? Could you provide some logs:
https://en.opensuse.org/openSUSE:Bugreport_wicked