If the display of the IPConfig command at the command prompt contains rows named "IPv6 Address" or "Temporary IPv6 Address," you have IPv6 in your environment. If all the IPv6 addresses begin with "fe80" and correspond to rows named "Link-Local IPv6 Address," you don't have IPv6 in your environment. These considerations might apply to your network:

IPv6 - Wikipedia IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 is intended to replace IPv4. In December 1998, IPv6 became a Draft Standard for the IETF, who subsequently ratified it as an Internet Standard on 14 July 2017. IPv6 problems | TiVoCommunity Forum Jul 01, 2020

Are you disabling IPv6? Maybe you should stop — and here’s why

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Fundamentals of IP Version 6 - Cisco 1.12 Configure, verify, and troubleshoot IPv6 addressing IPv4 has been a solid and highly useful part of the growth of TCP/IP and the Internet. For most of the long history of the Internet, and for most corporate networks that use TCP/IP, The problem, generally called the IPv4 address exhaustion problem… IPV6 Problem - Cisco Community IPV6 Problem I posted a question yesterday concerning IPV6 and updated it to "answered" by mistake. Whenever someone plugs in an Apple or HP device with IPV6 enabled, the VLAN that it … [IPv6] Asus RT-AC3100 ipv6 problem and work-around