3 RPI3 eth + wlan +的IP地址?

时间:2016-06-11 15:03:18

标签: raspberry-pi3

我有一个覆盆子3通过以太网和wifi连接到我的路由器。 所以我知道我应该有2个IP地址引用它。

但我写了hostname -I并获得3个不同的IP地址:
    192.168.1.100192.168.1.33192.168.1.35

第三个IP来自哪里?

  • 如果我从RPI断开以太网电缆并重新写入hostname -I我得到:
    192.168.1.100192.168.1.33

  • 这对'ifconfig'结果没有意义:

    
    
    eth0      Link encap:Ethernet  HWaddr b8:27:eb:d6:xx:xx
              inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::ba27:ebff:fed6:xxxx/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:23152 errors:0 dropped:6 overruns:0 frame:0
              TX packets:51977 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:12371346 (11.7 MiB)  TX bytes:58608891 (55.8 MiB)
    
    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:65536  Metric:1
              RX packets:416 errors:0 dropped:0 overruns:0 frame:0
              TX packets:416 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1
              RX bytes:47205 (46.0 KiB)  TX bytes:47205 (46.0 KiB)
    
    wlan0     Link encap:Ethernet  HWaddr b8:27:eb:83:xx:xx
              inet addr:192.168.1.33  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::8df4:f4d0:xxxx:115/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:28407 errors:0 dropped:23070 overruns:0 frame:0
              TX packets:4040 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:7492811 (7.1 MiB)  TX bytes:4725779 (4.5 MiB)
    

更新 正如Bugfinger指出使用ip addr show显示地址分配给哪个设备:


2: eth0:  mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether b8:27:eb:d6:fb:5a brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.100/24 brd 192.168.1.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet 192.168.1.35/24 brd 192.168.1.255 scope global secondary eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::ba27:ebff:fed6:fb5a/64 scope link
       valid_lft forever preferred_lft forever`
  
 我有两个不同的地址到eth0:

scope global eth0scope global secondary eth0

1 个答案:

答案 0 :(得分:1)

最近的Raspbian版本(因为 Jessie )正在使用 DHCP客户端守护程序(DHCPCD)来配置网络设备。因此,要在/etc/dhcpcd.conf中配置静态IP地址。如果您手动或通过/etc/network/interfaces将它们配置为静态,则最终会在同一设备上使用一个静态IP地址和一个动态IP地址。至于我读到它,它还不清楚,如果这是 DHCPCD 中的错误或错误配置后的预期行为。

无论如何,要改变这种情况,你必须按照以下步骤进行。

要查看它是否正在运行,请检查输出:

sudo service dhcpcd status

如果它没有运行,请使用以下命令启动它:

sudo service dhcpcd start
sudo systemctl enable dhcpcd

如果您已更改/etc/network/interfaces,则需要还原这些更改。该文件的原始内容(在 Jessie 中)是:

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual
allow-hotplug wlan0
iface wlan0 inet manual
   wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

allow-hotplug wlan1
iface wlan1 inet manual
   wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

现在应该再次通过DHCP配置所有接口。如果您现在要为eth0设置静态IP地址,请修改/etc/dhcpcd.conf并输入:

interface eth0
static ip_address=192.168.1.100/24
static routers=192.168.1.1 # or whatever your router is
static domain_name_servers=192.168.1.1 # same as router

保存文件和sudo reboot后,您的 Raspi 应该使用静态eth0和动态wlan0重启,并且不会留下额外的IP地址。