debian也有bug了的时候

今天突然发现，有台机器的网卡流量居然为0，然后再看了一下别的所有的机器，也都通通是0。
这肯定不是某台机器的偶发问题了，基本可以断言是前几天的apt upgrade弄坏掉了，当时注意到升级了几十个包，蛮大的一次升级。
没流量数据问题本身不大，不过蛮搞笑，本以为升级升坏是微硬的专利，结果不是。

root@api:~# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.7  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::5054:ff:fe78:aa5e  prefixlen 64  scopeid 0x20<link>
        ether 52:54:00:78:aa:5e  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

root@api:~# uptime
 16:58:41 up 75 days,  4:06,  2 users,  load average: 0.02, 0.02, 0.00