我的 Mint-KDE PC 上的 Wi-Fi 连接运行良好。最近，我带来了一台 Synology NAS，经过一番研究后发现我需要将 eth0 设置为静态 IP，以便它通过以太网线连接到 NAS。所以，我将这一行添加到我的/etc/network/interfaces文件中：
auto eth0
iface eth0 inet static
address 192.168.1.99
netmask 255.255.255.0
gateway 192.168.1.100
现在，在我重新启动电脑后，我的以太网连接到 Synology 正常，但我遇到了一个新问题，我的互联网连接消失了。它说连接“my_wifi_name”已连接，但我没有互联网，即使ping google.com在终端中也没有响应。 ( ping: unknown host google.com)
这是我在更改/etc/network/interfaces文件之前的 ifconfig 响应：（使用此设置，LAN 无法连接到 NAS，它给了我Connection 'Wired Connection 1' deactivated。）
$ ifconfig
eth0 Link encap:Ethernet HWaddr c8:60:00:de:b7:da
inet6 addr: fe80::ca60:ff:fede:b7da/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3540 (3.5 KB) TX bytes:12967 (12.9 KB)
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:651 errors:0 dropped:0 overruns:0 frame:0
TX packets:651 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:85658 (85.6 KB) TX bytes:85658 (85.6 KB)
vmnet1 Link encap:Ethernet HWaddr 00:50:56:c0:00:01
inet addr:172.16.82.1 Bcast:172.16.82.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:104 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vmnet8 Link encap:Ethernet HWaddr 00:50:56:c0:00:08
inet addr:192.168.156.1 Bcast:192.168.156.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:105 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr 64:70:02:f0:b9:7f
inet addr:192.168.1.4 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::6670:2ff:fef0:b97f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:627 errors:0 dropped:0 overruns:0 frame:0
TX packets:626 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:395824 (395.8 KB) TX bytes:110123 (110.1 KB)
这是我更改/etc/network/interfaces文件后的 ifconfig 响应：（使用此设置，wi-fi 和 LAN 都连接到 NAS，但尽管 wi-fi 连接状态成功，但互联网不可用。）
$ ifconfig
eth0 Link encap:Ethernet HWaddr c8:60:00:de:b7:da
inet addr:192.168.1.99 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::ca60:ff:fede:b7da/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:140 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3540 (3.5 KB) TX bytes:17523 (17.5 KB)
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:894 errors:0 dropped:0 overruns:0 frame:0
TX packets:894 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:88248 (88.2 KB) TX bytes:88248 (88.2 KB)
vmnet1 Link encap:Ethernet HWaddr 00:50:56:c0:00:01
inet addr:172.16.82.1 Bcast:172.16.82.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:61 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vmnet8 Link encap:Ethernet HWaddr 00:50:56:c0:00:08
inet addr:192.168.156.1 Bcast:192.168.156.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:61 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr 64:70:02:f0:b9:7f
inet addr:192.168.1.4 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::6670:2ff:fef0:b97f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:60 errors:0 dropped:0 overruns:0 frame:0
TX packets:59 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3465 (3.4 KB) TX bytes:11879 (11.8 KB)
我在这里做错了什么？我不知道，谷歌搜索也没有帮助。谢谢。
编辑：这是我的 ip 路由命令输出：
$ ip route
default via 192.168.1.1 dev wlan0 proto static
172.16.82.0/24 dev vmnet1 proto kernel scope link src 172.16.82.1
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.4 metric 9
192.168.156.0/24 dev vmnet8 proto kernel scope link src 192.168.156.1
另外，我随机选择了地址和网关/etc/network/interfaces，一开始我将其更改为原始问题中所示的另一个值，希望它能够正常工作。我显然不知道这些值意味着什么，我认为这些是将与 eth0 关联的静态 IP，我的 Synology 将读取它并锁定到该静态地址。
第一次尝试使用的“/etc/network/interfaces”文件：
auto eth0
iface eth0 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1