我在将 CentOS 7 客户机连接到互联网时遇到问题。我的 VirtualBox 网络配置如下：
Adapter 1: NAT; Adapter 2: Host-Only (vboxnet0)
vboxnet0 使用默认 VirtualBox 参数通过 DHCP 连接设置。
在我的 CentOS 来宾中，我命令ip a并得到以下信息：
enp0s3: 10.0.2.15/24 (NAT adapter)
enp0s8: 192.168.56.102/24 (Host-Only adapter)
我可以从我的主机连接到我的 VirtualBox：
ping 192.168.56.102
可以发送和接收数据包。
但是，我的 VirtualBox 无法访问互联网：
ping www.google.com
输出“未知主机 www.google.com”
这是我的ifcfg-enp0s3：
TYPE=Ethernet
BOOTPROTO=dhcp
DEFROUTE=yes
PEERDNS=yes
IPV4_FAILURE_FATAL=no
IPV6_INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=enp0s3
UUID=UUID HERE (sorry I cannot copy from my guest host yet, no Guest Additions and it was too long)
DEVICE=enp0s3 …我在卸载 dovecot 时遇到问题。在试图修复它时，我让它变得更糟。这是“日志”：
Errors were encountered while processing:
dovecot-imapd
dovecot-pop3d
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@gasimzada:/usr/lib# apt-get remove -f dovecot-imapd
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
dovecot-imapd dovecot-pop3d
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 976 kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... …