<entry><literal>iso_8601</literal></entry>

<entry>P1Y2M</entry>

<entry>P3DT4H5M6S</entry>

<entry>P-1Y-2M3DT-4H-5M-6S</entry>

<entry>P-1Y-2M3D&zwsp;T-4H-5M-6S</entry>

</row>

</tbody>

</tgroup>

<replaceable class="parameter">y</replaceable>

is the number of bits in the netmask. If the

<replaceable class="parameter">/y</replaceable>

portion is missing, the

netmask is 32 for IPv4 and 128 for IPv6, so the value represents

portion is omitted, the

netmask is taken to be 32 for IPv4 or 128 for IPv6,

so the value represents

just a single host. On display, the

<replaceable class="parameter">/y</replaceable>

portion is suppressed if the netmask specifies a single host.

conventions.

The format for specifying networks is <replaceable

class="parameter">address/y</replaceable> where <replaceable

class="parameter">address</replaceable> is the network represented as an

class="parameter">address</replaceable> is the network's lowest

address represented as an

IPv4 or IPv6 address, and <replaceable

class="parameter">y</replaceable> is the number of bits in the netmask. If

<replaceable class="parameter">y</replaceable> is omitted, it is calculated

<row>

<entry>2001:4f8:3:ba::/64</entry>

<entry>2001:4f8:3:ba::/64</entry>

<entry>2001:4f8:3:ba::/64</entry>

<entry>2001:4f8:3:ba/64</entry>

</row>

<row>

<entry>2001:4f8:3:ba:2e0:81ff:fe22:d1f1/128</entry>

<entry>2001:4f8:3:ba:2e0:81ff:fe22:d1f1/128</entry>

<entry>2001:4f8:3:ba:2e0:81ff:fe22:d1f1</entry>

<entry>2001:4f8:3:ba:&zwsp;2e0:81ff:fe22:d1f1/128</entry>

<entry>2001:4f8:3:ba:&zwsp;2e0:81ff:fe22:d1f1/128</entry>

<entry>2001:4f8:3:ba:&zwsp;2e0:81ff:fe22:d1f1/128</entry>

</row>

<row>

<entry>::ffff:1.2.3.0/120</entry>

<member><literal>'08002b010203'</literal></member>

</simplelist>

These exampleswouldall specify the same address. Upper and

These examples all specify the same address. Upper and

lower case is accepted for the digits

<literal>a</literal> through <literal>f</literal>. Output is always in the

first of the forms shown.

<member><literal>'08002b0102030405'</literal></member>

</simplelist>

These exampleswouldall specify the same address. Upper and

These examples all specify the same address. Upper and

lower case is accepted for the digits

<literal>a</literal> through <literal>f</literal>. Output is always in the

first of the forms shown.

</para>

The last six input formats that are mentioned above are not part

of any standard.

<para>

The last six input formats shown above are not part of any standard.

</para>

<para>

To convert a traditional 48 bit MAC address in EUI-48 format to

modified EUI-64 format to be included as the host portion of an

IPv6 address, use <function>macaddr8_set7bit</function> as shown:

<entry><type>regoperator</type></entry>

<entry><structname>pg_operator</structname></entry>

<entry>operator with argument types</entry>

<entry><literal>*(integer,integer)</literal> or <literal>-(NONE,integer)</literal></entry>

<entry><literal>*(integer,&zwsp;integer)</literal>

or <literal>-(NONE,&zwsp;integer)</literal></entry>

</row>

<row>