使用ioctl在Linux中获取IPv6地址 [英] Get IPv6 addresses in linux using ioctl

问题描述

我试图在Linux操作系统中获取IPv6地址，如下所示:

I trying to get IPv6 addresses in my linux OS like following:

sd = Socket_m(AF_INET6_m, SOCK_DGRAM_m, 0);

ifc.ifc_buf = buffer_p;
ifc.ifc_len = buffSize;
Ioctl_m(sd, SIOCGIFCONF, &ifc);

如果为接口配置了任何IPv4地址，该方法都可以成功运行，但是如果接口只有一个IPv6地址，则ioctl不会返回该地址.

It works succesfully if any IPv4 address are configured for interface, but if interface has only one IPv6 address it is not returned by ioctl.

例如，由于仅配置了IPv6地址，因此无法获取followith接口的IPv6地址:

For example, I unable to get IPv6 address of the followith interface because only IPv6 address is configured:

br1       Link encap:Ethernet  HWaddr 00:10:18:2D:BB:34  
          inet6 addr: fe80::210:18ff:fe2d:be54/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:194244850 errors:0 dropped:0 overruns:0 frame:0
          TX packets:72005 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:12331900995 (11760.6 Mb)  TX bytes:6192406 (5.9 Mb)

推荐答案

是的，ioctl是旧版，不会返回IPv6.每个平台都有不同的获取IPv6的方式:

Yes, that ioctl is legacy and won't return IPv6. Each platform has a different way of getting the IPv6 ones:

• Linux，如果您发疯了，请使用NETLINK；如果您最近使用的glibc不太明确，请使用getifaddrs；否则请阅读/proc/net/if_inet6(例如，在Android上).
• Darwin或FreeBSD:使用getifaddrs.
• Solaris，使用SIOCGLIFCONF.
• 在AIX中，使用SIOCGIFCONF实际上返回IPv4和IPv6地址(因为它们在struct sockaddr中具有一个sa_len字段，因此它们实际上可以支持该地址).

• Linux, use NETLINK if you're crazy, use getifaddrs if you have a vaguely recent glibc, otherwise read /proc/net/if_inet6 (eg on Android).
• Darwin or FreeBSD: use getifaddrs.
• Solaris, use SIOCGLIFCONF.
• AIX, use SIOCGIFCONF which actually returns IPv4 and IPv6 addresses (because they have an sa_len field in struct sockaddr they can actually support that).

这篇关于使用ioctl在Linux中获取IPv6地址的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！