TCPView v4.19 on Windows 11 With "Resolve names" OFF, tcpview displays the local and remote IPv6 addresses. With "Resolve names" ON, it produces spurious "names" that look like IPv4 addresses, and then attempts to resolve those where possible.

Bug Report: tcpview bad IPv6 name resolution

James Garrison 246

TCPView v4.19 on Windows 11 With "Resolve names" OFF, tcpview displays the local and remote IPv6 addresses. Snag_16ac400f

With "Resolve names" ON, it produces spurious "names" that look like IPv4 addresses, and then attempts to resolve those where possible. Snag_16aea596

Jason McCord 0 Reputation points

2024-10-08T17:16:14.0166667+00:00

The "Resolved Address" appears to be the first parts of the IPv6 address converted to decimal and formatted as an IPv4 address.
Matthew Steeples 106 Reputation points

2024-10-14T13:53:39.7866667+00:00

I'm seeing this with Resolve Names on too. It's gone one step further and taken the first part of the IPv6 address converted to decimal and formatted as an IPv4 address and then done a DNS lookup on that. Those "fibrefirst" records are actually 2603:1020:5:4::f (somewhere in Azure)