最近开始使用chinanet无线上网,但是使用的是pppoe协议.自己理解就是相当于把媒介

电缆换成了无线而已.

在pppoe配置完过后,可以连接网络,但是在察看网络连接的时候,发现了一个没有见过的

问题:

$/sbin/ifconfig

eth0 Link encap:Ethernet HWaddr 00:22:64:64:6d:03

UP BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

Interrupt:22 Memory:dc500000-dc520000

eth0:avahi Link encap:Ethernet HWaddr 00:22:64:64:6d:03

inet addr:169.254.4.218 Bcast:169.254.255.255 Mask:255.255.0.0

UP BROADCAST MULTICAST MTU:1500 Metric:1

Interrupt:22 Memory:dc500000-dc520000

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:120 errors:0 dropped:0 overruns:0 frame:0

TX packets:120 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:6000 (5.8 KiB) TX bytes:6000 (5.8 KiB)

上面的输出略去的wlan0和ppp0信息比较奇怪的是这个虚拟设备avahi是什么东西?从

何而来?在网上发现了avahi的首页(http://avahi.org/),首页上介绍avahi是:

Avahi is a system which facilitates service discovery on a local network via the

mDNS/DNS-SD protocol suite. This enables you to plug your laptop or computer

into a network and instantly be able to view other people who you can chat with,

find printers to print to or find files being shared. Compatible technology

is found in Apple MacOS X (branded Bonjour and sometimes Zeroconf).

简单来说Avahi就是一个在局域网里面帮助自动配置网络的工具,使用的是mDNS/DNS-SD

协议族.这样大家就可以方便的在网络之间移动接入局域网.