RFR: 8299827: Add resolved IP address in connection exception for sockets [v6]

[Jaikiran Pai]

On Wed, 18 Jan 2023 14:01:59 GMT, Ralf Schmelter <rschmelter at openjdk.org> wrote:

>> This change adds the resolved IP address to the exception text of a failed socket connection. This helps if the connection failed because of stale DNS entries.
>
> Ralf Schmelter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Adjusted copyright headers

Thank you Ralf for the updates. The current state of this PR (commit `a69d844b`) looks good to me.

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Marked as reviewed by jpai (Reviewer).

PR: https://git.openjdk.org/jdk/pull/11961