HP-UX IPv6 Porting Guide (September 2004)
Table Of Contents
- About This Document
- 1 Introduction
- 2 IPv6 Addressing
- 3 Data Structure Changes
- 4 Migrating Applications from IPv4 to IPv6
- 5 Overview of IPv4 and IPv6 Call Set-up
- 6 Function Calls Converting Names to Addresses
- 7 Function Calls Converting IP addresses to Names
- 8 Reading Error Messages
- 9 Freeing Memory
- 10 Converting Binary and Text Addresses
- 11 Testing for Scope and Type of IPv6 addresses using Macros
- 12 Identifying Local Interface Names and Indexes
- 13 Configuring or Querying an Interface using IPv6 ioctl() Function Calls
- 14 Verifying IPv6 Installation
- 15 Sample Client/Server Programs
- A IPv4 to IPv6 Quick Reference Guide
Identifying Local Interface Names and Indexes
Freeing Memory
Chapter 1254
The if_nameindex() function acquires memory dynamically for the array of if_nameindex
structures and for if_name’s interface names. The if_freenameindex() function frees that
memory.
Freeing Memory
The if_freenameindex() function frees the dynamic-memory allocated by if_nameindex().
Header Files
#include <net/if.h>
Syntax
void if_freenameindex(struct if_nameindex *ptr);
The ptr parameter is the pointer returned by a previous if_nameindex() call.