<literal>172.20.143.89/32</literal> for a single host, or
<literal>172.20.143.0/24</literal> for a small network, or
<literal>10.6.0.0/16</literal> for a larger one.
- <literal>0.0.0.0/0</literal> (<quote>all balls</>) represents all
- IPv4 addresses, and <literal>::</literal> represents
+ <literal>0.0.0.0/0</literal> represents all
+ IPv4 addresses, and <literal>::/0</literal> represents
all IPv6 addresses.
To specify a single host, use a CIDR mask of 32 for IPv4 or
128 for IPv6. In a network address, do not omit trailing zeroes.