Widget Networkmanager resets ipv6.addr-gen-mode

Environment: Tumbleweed fully upgraded Using an editor I changed ipv6.addr-gen-mode to eui64 for the Ethernet (cable) connection. However after using the Networkmanager widget and adding search domains for IPv6 I found that the value was changed back into stable-privacy. I don't see an option in the widget to set it to eui64. Is this a bug? -- fr.gr. member openSUSE Freek de Kruijf