Add note about IPv6 and NotSupportedException

[rzikm]

Fixes #792.

[ghost]

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Issue Details

---

Fixes #792.

Author:	rzikm
Assignees:	rzikm
Labels:	area-System.Net
Milestone:	-

[opbld32]

Learn Build status updates of commit e40b32e:

✅ Validation status: passed

File	Status	Preview URL	Details
xml/System.Net.Sockets/TcpClient.xml	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[rzikm]

bump @dotnet/ncl, please take a look.

[opbld34]

Learn Build status updates of commit 1cc8443:

✅ Validation status: passed

File	Status	Preview URL	Details
xml/System.Net.Sockets/TcpClient.xml	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel