Ubuntu 22.04环境下e1000e驱动网卡反复丢失DHCP租约问题求助（FTP传输触发）

各位大佬好，我最近碰到一个烦人的网络问题，折腾了好久没解决，想请教下大家：

我用的是M70q迷你主机，网卡搭载的是e1000e驱动，系统是Ubuntu 22.04。每次尝试往这台机器上传FTP文件的时候，网卡就会丢失IP地址；虽然能自动恢复，但过个几分钟又会再次掉线，反复循环。

我查了下网上的资料，说“lost carrier”通常是物理连接的问题，但我已经换过好几根网线，也切换过路由器的端口，问题还是没解决。

下面是我的相关配置和日志信息，麻烦大家帮忙看看有没有什么线索：

当前Netplan配置 #

# This is the network config written by 'subiquity'
network:
  version: 2
  ethernets:
    eno2:
      addresses:
        - 192.168.12.185/24
      routes:
        - to: default
          via: 192.168.12.1
      mtu: 9000

ifconfig网卡统计信息 #

eno2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
        inet 192.168.12.185  netmask 255.255.255.0  broadcast 192.168.12.255
        inet6 fe80::6e24:8ff:fe14:73ab  prefixlen 64  scopeid 0x20<link>
        inet6 2607:fb91:3f2e:1161:6e24:8ff:fe14:73ab  prefixlen 64  scopeid 0x0<global>
        inet6 2607:fb91:3f2e:1161:107d:5739:0:22e  prefixlen 128  scopeid 0x0<global>
        ether 6c:24:08:14:73:ab  txqueuelen 1000  (Ethernet)
        RX packets 3866534  bytes 4333695123 (4.3 GB)
        RX errors 0  dropped 7  overruns 0  frame 0
        TX packets 4863702  bytes 3497649374 (3.4 GB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  memory 0xb1200000-b1220000

问题触发时的Syslog日志 #

systemd-networkd[891]: eno2: Lost carrier
kernel: [352082.226632] e1000e 0000:00:1f.6 eno2: NIC Link is Down
systemd-networkd[891]: eno2: DHCPv6 lease lost
systemd-timesyncd[852]: No network connectivity, watching for changes.
kernel: [352084.981150] e1000e 0000:00:1f.6 eno2: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
systemd-networkd[891]: eno2: Gained carrier
systemd-timesyncd[852]: Network configuration changed, trying to establish connection.
systemd-timesyncd[852]: Timed out waiting for reply from 91.189.94.4:123 (ntp.ubuntu.com).
systemd-timesyncd[852]: Initial synchronization to time server 185.125.190.57:123 (ntp.ubuntu.com).

备注：内容来源于stack exchange，提问作者Funkyguy