trying to run dual-stack rke2 with ipv6 support

cluster-cidr: 10.42.0.0/16,2001:cafe:42:0::/56
service-cidr: 10.43.0.0/16,2001:cafe:42:1::/112

any suggestions?

E1214 11:56:17.881602       1 main.go:330] Error registering network: failed to configure interface flannel-v6.1: failed to ensure v6 address of interface flannel-v6.1: failed to add v6 IP address 2001:cafe:42::/56 to flannel-v6.1: permission denied