Úgy, hogy többek között te szoktál vernyákolni, hogy a systemd mindent is csinál, és az nem az init dolga. Fel szokott jönni a mindenféle damontools és hasonlók pl.
Ráadásul:
docker run -ti --rm busybox /bin/sh ~/zmc6.0.10
/ # ifconfig
eth0 Link encap:Ethernet HWaddr 02:42:AC:12:00:02
inet addr:172.18.0.2 Bcast:172.18.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4460 (4.3 KiB) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
/ # ifup
BusyBox v1.26.2 (2017-05-15 21:05:54 UTC) multi-call binary.
Usage: ifup [-anmvf] [-i FILE] IFACE...
-a Configure all interfaces
-i FILE Use FILE instead of /etc/network/interfaces
-n Print out what would happen, but don't do it
(note: doesn't disable mappings)
-m Don't run any mappings
-v Print out what would happen before doing it
-f Force configuration
/ # ifdown
BusyBox v1.26.2 (2017-05-15 21:05:54 UTC) multi-call binary.
Usage: ifdown [-anmvf] [-i FILE] IFACE...
-a Deconfigure all interfaces
-i FILE Use FILE for interface definitions
-n Print out what would happen, but don't do it
(note: doesn't disable mappings)
-m Don't run any mappings
-v Print out what would happen before doing it
-f Force deconfiguration