Put each entry on a new line. Valid entries are either full IPv4 or IPv6 addresses (such as 192.168.10.1, 0:0:0:0:0:0:0:1, ::1, fe80::) which match a single host; or CIDR notation (such as 231.54.211.0/20 or fe80::/64); or a range of IP addresses (such as 231.3.56.10-20 or fe80::1111-bbbb) where the range applies to the last group of the address; or domain names (such as localhost or example.com); or wildcard domain names (such as *.example.com or *.sub.example.com). Blank lines are not allowed.