[#BIO_ADDR_dup]
= BIO&lowbar;ADDR&lowbar;dup
:mrdocs:

Duplicate a BIO&lowbar;ADDR, copying its family and address bytes&period;

== Synopsis

Declared in `&lt;openssl&sol;bio&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BIO_ADDR.adoc[BIO&lowbar;ADDR]*
BIO&lowbar;ADDR&lowbar;dup(xref:BIO_ADDR.adoc[BIO&lowbar;ADDR] const* ap);
----

== Return Value

Newly allocated copy, or NULL on failure &sol; if `ap` is NULL&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ap*
| Address to copy, or NULL&period;
|===


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