mask: ${mask:2a00:2:3:4:5:6:7:8/79}
mask: ${mask:2a00:2:3:4:5:6:7:8/128}
mask: ${mask:2a00:2:3:4:5:6:7:8/129}
+mask_n: ${mask_n:2a00:2:3:4:5:6:7:8/79}
ipv6denorm: ${ipv6denorm:::1}
ipv6denorm: ${ipv6denorm:fe00::1}
ipv6denorm: ${ipv6denorm:192.168.0.1}