"ULA is functionally useless in any IPv6 deployment that has dual-stack operating anywhere." "ULA per RFC 6724 is less preferred (the Precedence value is lower

"ULA is functionally useless in any IPv6 deployment that has dual-stack operating anywhere." "ULA per RFC 6724 is less preferred (the Precedence value is lower) than all IPv4 (represented by ::ffff:0:0/96 in the table). Because of the lower Precedence value, if you have IPv4 enabled on a host, it will use IPv4 before using ULA." https://blogs.infoblox.com/ipv6-coe/ula-is-broken-in-dual-stack-networks/ https://blogs.infoblox.com/ipv6-coe/ula-is-broken-in-dual-st...