树莓派只启用一个无线网卡为何有两个局域网 IP?

pi@raspberrypi:~ $ sudo ifconfig
eth0      Link encap:Ethernet  HWaddr b8:27:eb:91:46:91
          inet6 addr: fe80::ca34:11e2:7331:b87d/64 Scope:Link
          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)

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:1086 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1086 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:83408 (81.4 KiB)  TX bytes:83408 (81.4 KiB)

wlan0     Link encap:Ethernet  HWaddr b4:ee:b4:87:3a:d1
          inet addr:192.168.0.121  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::b6ee:b4ff:fe87:3ad1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:241947 errors:0 dropped:35834 overruns:0 frame:0
          TX packets:225100 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:185653893 (177.0 MiB)  TX bytes:195708830 (186.6 MiB)

pi@raspberrypi:~ $ hostname -I
192.168.0.121 192.168.0.111

网络配置如下：

pi@raspberrypi:~ $ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)

# 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

auto eth0
allow-hotplug eth0
iface eth0 inet manual

auto wlan0
allow-hotplug wlan0
iface wlan0 inet static
        address 192.168.0.121
        netmask 255.255.255.0
        gateway 192.168.0.1
        wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

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

这个 192.168.0.111 是从哪里来的？

lenovo

2017-01-23 11:21:09 +08:00

r#3 @holyzhou @mingl0280
看起来还是 wlan0 分配的 IP ，不知怎么停用这一个？

pi@raspberrypi:~ $ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
link/ether b8:27:eb:91:46:91 brd ff:ff:ff:ff:ff:ff
inet6 fe80::ca34:11e2:7331:b87d/64 scope link tentative
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether b4:ee:b4:87:3a:d1 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.121/24 brd 192.168.0.255 scope global wlan0
valid_lft forever preferred_lft forever
inet 192.168.0.111/24 brd 192.168.0.255 scope global secondary wlan0
valid_lft forever preferred_lft forever
inet6 fe80::b6ee:b4ff:fe87:3ad1/64 scope link
valid_lft forever preferred_lft forever

lenovo

2017-01-23 11:23:03 +08:00

r#3 @holyzhou
pi@raspberrypi:~ $ sudo journalctl |grep "IP"
Jan 22 13:33:21 raspberrypi kernel: CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Jan 22 13:33:21 raspberrypi kernel: Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
Jan 22 13:33:21 raspberrypi kernel: SMP: Total of 4 processors activated (153.60 BogoMIPS).
Jan 22 13:33:26 raspberrypi kernel: IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Jan 22 13:33:27 raspberrypi kernel: IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Jan 22 13:33:27 raspberrypi kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::b6ee:b4ff:fe87:3ad1.
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: New relevant interface wlan0.IPv6 for mDNS.
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.0.121.
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: New relevant interface wlan0.IPv4 for mDNS.
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::ca34:11e2:7331:b87d.
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: New relevant interface eth0.IPv6 for mDNS.
Jan 22 13:33:28 raspberrypi avahi-daemon[493]: Registering new address record for 192.168.0.121 on wlan0.IPv4.
Jan 22 13:33:29 raspberrypi dhcpcd[514]: wlan0: soliciting an IPv6 router
Jan 22 13:33:35 raspberrypi avahi-daemon[493]: Registering new address record for 192.168.0.111 on wlan0.IPv4.
Jan 22 13:33:41 raspberrypi dhcpcd[514]: wlan0: no IPv6 Routers available