單網卡 多IP - Linux

你好！我有一個問題
在/etc/sysconfig/network-scripts目錄裡
cp ifcfg-eth0 ifcfg-eth0:1

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ifcfg-eth0　檔內容

DEVICE=eth0
BOOTPROTO=static
HWADDR=00:01:02:38:BA:BF
IPADDR=192.168.2.16
NETMASK=255.255.255.0
ONBOOT=yes
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ifcfg-eth0:1 檔內容

DEVICE=eth0:1
BOOTPROTO=static
HWADDR=00:01:02:38:BA:BF
IPADDR=192.168.2.11
NETMASK=255.255.255.0
ONBOOT=yes

電腦重新開機登入後，鍵入指令 ifconfig

eth0 Link encap:Ethernet HWaddr 00:01:02:38:BA:BF
inet addr:192.168.2.11 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::201:2ff:fe38:babf/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:44 errors:0 dropped:0 overruns:1 frame:0
TX packets:98 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5076 (4.9 KiB) TX bytes:15242 (14.8 KiB)
Interrupt:12 Base address:0x4000

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:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:560 (560.0 b) TX bytes:560 (560.0 b)

為什麼eth0　變成了eth0:1 的192.168.2.11
而不是會有兩個介面　
eth0 192.168.2.16
eth0:1 192.168.2.11









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