kernel-default-base from Kernel:openSUSE-15.1:Submit project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Kernel:openSUSE-15.1:Submit/standard/Kernel:openSUSE-15.1:Submit.repo zypper refresh zypper install kernel-default-base
For ports run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Kernel:openSUSE-15.1:Submit/ports/Kernel:openSUSE-15.1:Submit.repo zypper refresh zypper install kernel-default-base