mask: ${mask:192.168.10.206}
mask: ${mask:a.b.c.d}
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}