handling IPv6 within square brackets (backport #32989)

[mergify]

This is an automatic backport of pull request #32989 done by Mergify.

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[elasticmachine]

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• Start Time: 2022-09-07T13:26:36.164+0000

• Duration: 72 min 19 sec

Test stats 🧪

Test	Results
Failed	0
Passed	6274
Skipped	737
Total	7011

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[andrewkroh]

There will be no more releases from the 8.3 branch so there is no need to backport to 8.3. Only 8.4 will have new patch releases.

[gsantoro]

@andrewkroh I have been told differently. I'll send you some details about an internal discussion. I have been told by my tech lead to go forward

[cmacknz]

If you do revive the 8.3 branch, to fix the test failures you will need to backport 249d445 to 8.3 as well.

[gsantoro]

@cmacknz Sorry about breaking 8.3 building. I'll create a PR and cherry pick that commit