使用 macchanger 更改 mac 地址后无法恢复网络接口 eth0

Question

我找不到我的问题的答案，因此我发布了此内容。

我正在使用 Kali linux，当我使用 macchanger 成功更改我的 mac 地址时，我无法重新启动我的网络接口 eth0。

我需要帮助来解决这个问题。

命令序列：

Checking default mac address:
# macchanger -s eth0

Stopping Network Manager:
# service network-manager stop

Changing mac address:
# macchanger -r eth0

Confirming the mac address change
# macchanger -s eth0

Starting Network-Manager
# service network-manager start

Network interface eth0 does not come back up.
# tail -f /var/log/messages
Jan 23 22:44:08 kali NetworkManager[4893]: <info>  [1485240248.3456] 

dhcp4 (eth0): activation: beginning transaction (timeout in 45 seconds)
Jan 23 22:44:08 kali NetworkManager[4893]: <info>  [1485240248.3670] dhcp4 (eth0): dhclient started with pid 4932
Jan 23 22:44:53 kali NetworkManager[4893]: <warn>  [1485240293.3168] dhcp4 (eth0): request timed out
Jan 23 22:44:53 kali NetworkManager[4893]: <info>  [1485240293.3208] dhcp4 (eth0): state changed unknown -> timeout
Jan 23 22:44:53 kali NetworkManager[4893]: <info>  [1485240293.3244] dhcp4 (eth0): canceled DHCP transaction, DHCP client pid 4932
Jan 23 22:44:53 kali NetworkManager[4893]: <info>  [1485240293.3244] dhcp4 (eth0): state changed timeout -> done
Jan 23 22:44:53 kali NetworkManager[4893]: <info>  [1485240293.3281] device (eth0): Scheduling DHCPv4 restart because the connection is assumed

# cat /etc/NetworkManager/NetworkManager.conf 
[main]
plugins=ifupdown,keyfile
dns=none

[ifupdown]
managed=true

这似乎是 DHCP 问题，但我没有更改 DHCP 配置文件。它是 Kali Linux 自带的默认设置。

提前致谢。