Nan Xiao
2015-Jun-08 01:19 UTC
[CentOS] Why can't the CentOS get dynamic IP address in WIFI environment?
Hi CentOS users,
I have install CentOS 7 in VirtualBox, and want the guest CentOS using
dynamic IP address (The network type is bridged). I find the guest
CentOS can works OK when using ethernet cable, but can't get IP
address via wireless network. I also posted this issue on
stackoverflow
(http://superuser.com/questions/922045/how-does-the-guest-os-of-virtualbox-get-a-valid-dynamic-ip-address).
(1) The "ip addr" command outputs:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
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: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP qlen 1000
link/ether 08:00:27:bc:e1:67 brd ff:ff:ff:ff:ff:ff
(2) The content of ifcfg-enp0s3:
TYPE="Ethernet"
BOOTPROTO="dhcp"
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="enp0s3"
UUID="6d221230-f35b-44da-9536-a4e9acfa2bc2"
DEVICE="enp0s3"
ONBOOT="yes"
(3) The network related logs from /var/log/messages:
Jun 4 01:52:40 CentOS kernel: drop_monitor: Initializing network
drop monitor service
Jun 4 01:52:40 CentOS kernel: e1000: Intel(R) PRO/1000 Network
Driver - version 7.3.21-k8-NAPI
Jun 4 01:52:41 CentOS kernel: e1000 0000:00:03.0 eth0: Intel(R)
PRO/1000 Network Connection
Jun 4 01:52:41 CentOS systemd-udevd[234]: renamed network interface
eth0 to enp0s3
Jun 4 01:52:47 CentOS systemd: Starting Import network configuration
from initramfs...
Jun 4 01:52:47 CentOS systemd: Started Import network configuration
from initramfs.
Jun 4 01:52:51 CentOS systemd: Starting Network Manager...
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> NetworkManager
(version 1.0.0-14.git20150121.b4ea599c.el7) is starting...
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> Read config:
/etc/NetworkManager/NetworkManager.conf and conf.d:
10-ibft-plugin.conf
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> WEXT support is
disabled
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> Acquired D-Bus
service com.redhat.ifcfgrh1
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> Loaded plugin
ifcfg-rh: (c) 2007 - 2013 Red Hat, Inc. To report bugs please use the
NetworkManager mailing list.
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> Loaded plugin
iBFT: (c) 2014 Red Hat, Inc. To report bugs please use the
NetworkManager mailing list.
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> Loaded plugin
keyfile: (c) 2007 - 2013 Red Hat, Inc. To report bugs please use the
NetworkManager mailing list.
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> parsing
/etc/sysconfig/network-scripts/ifcfg-lo ...
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> parsing
/etc/sysconfig/network-scripts/ifcfg-enp0s3 ...
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> read connection
'enp0s3'
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> monitoring kernel
firmware directory '/lib/firmware'.
Jun 4 01:52:51 CentOS systemd: Started Network Manager.
Jun 4 01:52:51 CentOS systemd: Starting LSB: Bring up/down networking...
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> WiFi enabled by
radio killswitch; enabled by state file
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> WWAN enabled by
radio killswitch; enabled by state file
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> WiMAX enabled by
radio killswitch; enabled by state file
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> Networking is
enabled by state file
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (lo): link connected
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (lo): carrier is ON
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (lo): new Generic
device (driver: 'unknown' ifindex: 1)
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (lo): exported as
/org/freedesktop/NetworkManager/Devices/0
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (enp0s3): carrier is
OFF
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (enp0s3): new
Ethernet device (driver: 'e1000' ifindex: 2)
Jun 4 01:52:51 CentOS NetworkManager[689]: <info> (enp0s3): exported
as /org/freedesktop/NetworkManager/Devices/1
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3): preparing
device
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3): link
connected
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: unavailable -> disconnected (reason 'carrier-changed')
[20 30 40]
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> Auto-activating
connection 'enp0s3'.
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: starting connection 'enp0s3'
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) started...
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> NetworkManager
state is now CONNECTING
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) scheduled...
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) complete.
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) starting...
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: prepare -> config (reason 'none') [40 50 0]
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) successful.
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) complete.
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> parsing
/etc/sysconfig/network-scripts/ifcfg-lo ...
Jun 4 01:52:52 CentOS network: Bringing up loopback interface: Could
not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> parsing
/etc/sysconfig/network-scripts/ifcfg-lo ...
Jun 4 01:52:52 CentOS network: Could not load file
'/etc/sysconfig/network-scripts/ifcfg-lo'
Jun 4 01:52:52 CentOS NetworkManager[689]: <info> parsing
/etc/sysconfig/network-scripts/ifcfg-lo ...
Jun 4 01:52:52 CentOS network: Could not load file
'/etc/sysconfig/network-scripts/ifcfg-lo'
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> parsing
/etc/sysconfig/network-scripts/ifcfg-lo ...
Jun 4 01:52:53 CentOS network: Could not load file
'/etc/sysconfig/network-scripts/ifcfg-lo'
Jun 4 01:52:53 CentOS network: [ OK ]
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) scheduled.
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) started...
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: config -> ip-config (reason 'none') [50 70 0]
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> Activation
(enp0s3) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> dhclient started
with pid 1140
Jun 4 01:52:53 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) complete.
Jun 4 01:52:53 CentOS network: Bringing up interface enp0s3: [ OK ]
Jun 4 01:52:53 CentOS systemd: Started LSB: Bring up/down networking.
Jun 4 01:52:53 CentOS systemd: Starting Network.
Jun 4 01:52:53 CentOS systemd: Reached target Network.
Jun 4 01:52:53 CentOS dhclient[1140]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x623c8c73)
Jun 4 01:52:59 CentOS dhclient[1140]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x623c8c73)
Jun 4 01:53:06 CentOS dhclient[1140]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 7 (xid=0x28b9690d)
Jun 4 01:53:13 CentOS dhclient[1140]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 17 (xid=0x28b9690d)
Jun 4 01:53:24 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jun 4 01:53:24 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) started...
Jun 4 01:53:24 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jun 4 01:53:30 CentOS dhclient[1140]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 14 (xid=0x28b9690d)
Jun 4 01:53:38 CentOS NetworkManager[689]: <warn> (enp0s3): DHCPv4
request timed out.
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed unknown -> timeout
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3): canceled
DHCP transaction, DHCP client pid 1140
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed timeout -> done
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) started...
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: ip-config -> failed (reason 'ip-config-unavailable')
[70
120 5]
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> NetworkManager
state is now DISCONNECTED
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> startup complete
Jun 4 01:53:38 CentOS NetworkManager[689]: <warn> (enp0s3):
Activation: failed for connection 'enp0s3'
Jun 4 01:53:38 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) complete.
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: failed -> disconnected (reason 'none') [120 30 0]
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
deactivating device (reason 'none') [0]
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> Auto-activating
connection 'enp0s3'.
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: starting connection 'enp0s3'
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) started...
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> NetworkManager
state is now CONNECTING
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) scheduled...
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) complete.
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) starting...
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: prepare -> config (reason 'none') [40 50 0]
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) successful.
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) complete.
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) scheduled.
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) started...
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: config -> ip-config (reason 'none') [50 70 0]
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> Activation
(enp0s3) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> dhclient started
with pid 2365
Jun 4 01:53:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) complete.
Jun 4 01:53:39 CentOS dhclient[2365]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x224ada0f)
Jun 4 01:53:42 CentOS dhclient[2365]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x224ada0f)
Jun 4 01:53:46 CentOS dhclient[2365]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x224ada0f)
Jun 4 01:53:54 CentOS dhclient[2365]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 7 (xid=0x1de75b49)
Jun 4 01:54:01 CentOS dhclient[2365]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 11 (xid=0x1de75b49)
Jun 4 01:54:10 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jun 4 01:54:10 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) started...
Jun 4 01:54:10 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jun 4 01:54:12 CentOS dhclient[2365]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 21 (xid=0x1de75b49)
Jun 4 01:54:23 CentOS NetworkManager[689]: <warn> (enp0s3): DHCPv4
request timed out.
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed unknown -> timeout
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): canceled
DHCP transaction, DHCP client pid 2365
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed timeout -> done
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) started...
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: ip-config -> failed (reason 'ip-config-unavailable')
[70
120 5]
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> NetworkManager
state is now DISCONNECTED
Jun 4 01:54:23 CentOS NetworkManager[689]: <warn> (enp0s3):
Activation: failed for connection 'enp0s3'
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) complete.
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: failed -> disconnected (reason 'none') [120 30 0]
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
deactivating device (reason 'none') [0]
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> Auto-activating
connection 'enp0s3'.
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: starting connection 'enp0s3'
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) started...
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> NetworkManager
state is now CONNECTING
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) scheduled...
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) complete.
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) starting...
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: prepare -> config (reason 'none') [40 50 0]
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) successful.
Jun 4 01:54:23 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) complete.
Jun 4 01:54:24 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) scheduled.
Jun 4 01:54:24 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) started...
Jun 4 01:54:24 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: config -> ip-config (reason 'none') [50 70 0]
Jun 4 01:54:24 CentOS NetworkManager[689]: <info> Activation
(enp0s3) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jun 4 01:54:24 CentOS NetworkManager[689]: <info> dhclient started
with pid 2393
Jun 4 01:54:24 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) complete.
Jun 4 01:54:24 CentOS dhclient[2393]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x77843ed1)
Jun 4 01:54:29 CentOS dhclient[2393]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0x77843ed1)
Jun 4 01:54:41 CentOS dhclient[2393]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 4 (xid=0xe3a3af6)
Jun 4 01:54:45 CentOS dhclient[2393]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 5 (xid=0xe3a3af6)
Jun 4 01:54:50 CentOS dhclient[2393]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 12 (xid=0xe3a3af6)
Jun 4 01:54:55 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jun 4 01:54:55 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) started...
Jun 4 01:54:55 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jun 4 01:55:02 CentOS dhclient[2393]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 14 (xid=0xe3a3af6)
Jun 4 01:55:08 CentOS NetworkManager[689]: <warn> (enp0s3): DHCPv4
request timed out.
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed unknown -> timeout
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): canceled
DHCP transaction, DHCP client pid 2393
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed timeout -> done
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) started...
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: ip-config -> failed (reason 'ip-config-unavailable')
[70
120 5]
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> NetworkManager
state is now DISCONNECTED
Jun 4 01:55:08 CentOS NetworkManager[689]: <warn> (enp0s3):
Activation: failed for connection 'enp0s3'
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) complete.
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: failed -> disconnected (reason 'none') [120 30 0]
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
deactivating device (reason 'none') [0]
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> Auto-activating
connection 'enp0s3'.
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: starting connection 'enp0s3'
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) started...
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: disconnected -> prepare (reason 'none') [30 40 0]
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> NetworkManager
state is now CONNECTING
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) scheduled...
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 1 of 5 (Device Prepare) complete.
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) starting...
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: prepare -> config (reason 'none') [40 50 0]
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) successful.
Jun 4 01:55:08 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 2 of 5 (Device Configure) complete.
Jun 4 01:55:09 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) scheduled.
Jun 4 01:55:09 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) started...
Jun 4 01:55:09 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: config -> ip-config (reason 'none') [50 70 0]
Jun 4 01:55:09 CentOS NetworkManager[689]: <info> Activation
(enp0s3) Beginning DHCPv4 transaction (timeout in 45 seconds)
Jun 4 01:55:09 CentOS NetworkManager[689]: <info> dhclient started
with pid 2421
Jun 4 01:55:09 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 3 of 5 (IP Configure Start) complete.
Jun 4 01:55:09 CentOS dhclient[2421]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0xc0de211)
Jun 4 01:55:12 CentOS dhclient[2421]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0xc0de211)
Jun 4 01:55:16 CentOS dhclient[2421]: DHCPREQUEST on enp0s3 to
255.255.255.255 port 67 (xid=0xc0de211)
Jun 4 01:55:27 CentOS dhclient[2421]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 4 (xid=0x281d5ba3)
Jun 4 01:55:31 CentOS dhclient[2421]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 10 (xid=0x281d5ba3)
Jun 4 01:55:34 CentOS dhclient[2425]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 4 (xid=0x3e3fe85b)
Jun 4 01:55:38 CentOS dhclient[2425]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 5 (xid=0x3e3fe85b)
Jun 4 01:55:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Jun 4 01:55:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) started...
Jun 4 01:55:39 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv6 Configure Timeout) complete.
Jun 4 01:55:41 CentOS dhclient[2421]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 7 (xid=0x281d5ba3)
Jun 4 01:55:43 CentOS dhclient[2425]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 12 (xid=0x3e3fe85b)
Jun 4 01:55:48 CentOS dhclient[2421]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 11 (xid=0x281d5ba3)
Jun 4 01:55:53 CentOS NetworkManager[689]: <warn> (enp0s3): DHCPv4
request timed out.
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed unknown -> timeout
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3): canceled
DHCP transaction, DHCP client pid 2421
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3): DHCPv4
state changed timeout -> done
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) started...
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: ip-config -> failed (reason 'ip-config-unavailable')
[70
120 5]
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> NetworkManager
state is now DISCONNECTED
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> Disabling
autoconnect for connection 'enp0s3'.
Jun 4 01:55:53 CentOS NetworkManager[689]: <warn> (enp0s3):
Activation: failed for connection 'enp0s3'
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3):
Activation: Stage 4 of 5 (IPv4 Configure Timeout) complete.
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3): device
state change: failed -> disconnected (reason 'none') [120 30 0]
Jun 4 01:55:53 CentOS NetworkManager[689]: <info> (enp0s3):
deactivating device (reason 'none') [0]
Jun 4 01:55:55 CentOS dhclient[2425]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 11 (xid=0x3e3fe85b)
Jun 4 01:56:06 CentOS dhclient[2425]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 17 (xid=0x3e3fe85b)
Jun 4 01:56:23 CentOS dhclient[2425]: DHCPDISCOVER on enp0s3 to
255.255.255.255 port 67 interval 12 (xid=0x3e3fe85b)
Jun 4 01:56:35 CentOS dhclient[2425]: No DHCPOFFERS received.
Jun 4 01:56:35 CentOS dhclient[2425]: No working leases in
persistent database - sleeping.
Could anyone give some comments? Thanks very much!
Best Regards
Nan Xiao
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