When quit from the nmtui to agent-tui, the network confirm info will show up,  the ipv6 address can't fully displayed in this window, we may need to resize a window a bit to adjust the ipv6 address.

Always

1. Configure the ipv6 address in agent-config and install-config, and create the image
2. Boot the image, when the agent-tui show up, choose to 'Configure the network'. Don't need to make any change, just click 'quit' or 'Ok' on nmtui.
3. The network info confirm window show up, and the ipv6 address is not fully displayed.

All the info show fully show up in confirm window