Support IPv6 when completing wget/curl

[SoniEx2]

Describe the feature/solution

We would like wget and/or curl to support IPv6 when completing --bind-address (wget) or --interface (curl), this is very useful for use with IPv6, where a machine generally has multiple IPv6 at the same time.

Maintenance (please complete the following information)

• This is a request for new completion
• Link to upstream project query about shipping the completion:

[yedayak]

Created PR #1316 for this, can it try the fix and see if it works?