- All prompts accept 'a' = abort, 'b' = back to previous step
- Interface input: validate numeric range and name existence, re-prompt on bad input
- IP address: regex check x.x.x.x/prefix format
- Gateway: regex check x.x.x.x format
- Main loop: 'b' at mode selection goes back to interface list
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
User sees a numbered list but could only type the name.
Now numeric input is resolved to the interface name via awk NR==N.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Interactive script: lists interfaces, DHCP or static IP config.
Shown as hint in tty1 welcome message.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
