Comment # 4 on bug 1041443 from Michael Andres

> kernel-default-4.11.1-1.1.aarch64 openSUSE-Ports-Tumbleweed-repo-oss  
>                                   vendor(openSUSE)
> kernel-default-4.11.1-1.1.aarch64 @System
>                                   vendor(openSUSE)
> kernel-default-4.4.68-7.1.aarch64 @System
>                                   vendor(obs://build.opensuse.org/devel:ARM)

(In reply to Jeroen Pluimers from comment #0)
> 1. Basically both the 1 and c will abort the upgrade so there is no way to
> perform `--no-allow-vendor-change` upgrades any more.

That's not true. 

The conflict somehow tries to tell that there is no way to update
kernel-default-4.4.68-7.1. The available update (4.11.1) would cause a vendor
change, OTOH is this update already installed. We'll try to improve those
messages.

Anyway, if you select '1' the dup proceeds. It's just that your system is
already up-to-date, so there is actually nothing more to do. That's why it
probably looks like it's doing the same as 'cancel'.