有谁知道下面是什么意思??怎么有两个eth0?
coolhand@mylinux-desktop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:EC:DB:0B:07
inet6 addr: fe80::216:ecff:fedb:b07/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1771 errors:0 dropped:0 overruns:0 frame:0
TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:155414 (151.7 KiB) TX bytes:8140 (7.9 KiB)
Interrupt:20 Base address:0x2000

eth0:avah Link encap:Ethernet HWaddr 00:16:EC:DB:0B:07
inet addr:169.254.4.207 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:20 Base address:0x2000

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:1522 errors:0 dropped:0 overruns:0 frame:0
TX packets:1522 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:121828 (118.9 KiB) TX bytes:121828 (118.9 KiB)

一个IPV6 地址

ipv6是什么意思?我用锐捷的时候就是有两个eth0,让我选一个:
coolhand@mylinux-desktop:~/Desktop$ sudo xrgsu
XRGSupplicant 1.1.1
Ruijie Network CopyRight 2004-2005
Please input your user name:haolong886
Please input your password:
coolhand@mylinux-desktop:~/Desktop$ sudo xrgsu
XRGSupplicant 1.1.1
Ruijie Network CopyRight 2004-2005
Please input your user name:haolong886
Please input your password:
Use DHCP,1-Use,0-UnUse(Default: 0):1
You have 2 Nic:
   0.    eth0  Desc: (null)
   1.    eth0:avahi  Desc: (null)
Please select which NIC will be used(0-1,Default:0)
WARNING: IintNIC:NIC eth0 does not exist(3)
我选第二个的话:
coolhand@mylinux-desktop:~/Desktop$ sudo xrgsu
XRGSupplicant 1.1.1
Ruijie Network CopyRight 2004-2005
Please input your user name:haolong886
Please input your password:
Use DHCP,1-Use,0-UnUse(Default: 0):1
You have 2 Nic:
   0.    eth0  Desc: (null)
   1.    eth0:avahi  Desc: (null)
Please select which NIC will be used(0-1,Default:0)1
Use default auth parameter,0-Use 1-UnUse(Default: 0):
IintNIC:Send hellopacket error(2)
Searching server...
Connecting server...
IintNIC:Send hellopacket error(2)
Searching server...
Connecting server...
IintNIC:Send hellopacket error(2)
Searching server...
Connecting server...
xrgsu exit!
请问这是什么原因啊?

IPv6是“Internet Protocol Version 6”的缩写，它是IETF设计的用于替代现行版本IP协议-IPv4-的下一代IP协议。

禁用ipv6
方法:禁止IPv6内核模块
　　 vi /etc/modprobe.conf 添加如下两行：
　　alias net-pf-10 off
　　alias ipv6 off