https://iotools.cloud/tool/ipv6-ula-generator/
IPv6 ULA Generator - Creates RFC 4193 compliant Unique Local Address (ULA)
Generate RFC 4193 compliant IPv6 Unique Local Address (ULA) prefixes for private networks. Free online tool for creating statistically unique IPv6 address...
unique local addressulageneratorcreatesrfc
https://archive.linuxvirtualserver.org/html/lvs-users/2018-05/msg00019.html
Re: [lvs-users] IPv6 Unique Local address virtual server with IPv6 link
unique local addressvirtual serverwith linklvsusers