Containers: Input does not mach any value of interface

RouterOS General
1

Hello,

My device is a CCR2004-16G-2S+ on 7.19.4

[admin@xxx] > /system/routerboard/print
       routerboard: yes
             model: CCR2004-16G-2S+
     serial-number: XXX
     firmware-type: al64
  factory-firmware: 7.8
  current-firmware: 7.19.4
  upgrade-firmware: 7.19.4

I have installed the "container" package, and enabled it.

[admin@xxx] > /system/package/print
Columns: NAME, VERSION, BUILD-TIME, SIZE
# NAME       VERSION  BUILD-TIME           SIZE
0 wireless   7.19.4   2025-07-28 10:00:16  860.1KiB
1 routeros   7.19.4   2025-07-28 10:00:16  12.4MiB
2 container  7.19.4   2025-07-28 10:00:16  108.1KiB

The router has a few interfaces defined

[admin@xxx] > /interface/print
Flags: R - RUNNING; S - SLAVE
Columns: NAME, TYPE, ACTUAL-MTU, L2MTU, MAX-L2MTU, MAC-ADDRESS
 #    NAME          TYPE      ACTUAL-MTU  L2MTU  MAX-L2MTU  MAC-ADDRESS
 0 R  ether1        ether           1500   1596       9582  48:A9:8A:DA:83:8F
 1 R  ether2        ether           1500   1596       9582  48:A9:8A:DA:83:90
 2 RS ether3        ether           1500   1596       9582  48:A9:8A:DA:83:91
 3 RS ether4        ether           1500   1596       9582  48:A9:8A:DA:83:92
 4  S ether5        ether           1500   1596       9582  48:A9:8A:DA:83:93
 5  S ether6        ether           1500   1596       9582  48:A9:8A:DA:83:94
 6  S ether7        ether           1500   1596       9582  48:A9:8A:DA:83:95
 7 RS ether8        ether           1500   1596       9582  48:A9:8A:DA:83:96
 8  S ether9        ether           1500   1596       9582  48:A9:8A:DA:83:97
 9 RS ether10       ether           1500   1596       9582  48:A9:8A:DA:83:98
10  S ether11       ether           1500   1596       9582  48:A9:8A:DA:83:99
11  S ether12       ether           1500   1596       9582  48:A9:8A:DA:83:9A
12 R  ether13       ether           1500   1596       9582  48:A9:8A:DA:83:9B
13 RS ether14       ether           1500   1596       9582  48:A9:8A:DA:83:9C
14  S ether15       ether           1500   1596       9582  48:A9:8A:DA:83:9D
15  S ether16       ether           1500   1596       9582  48:A9:8A:DA:83:9E
16  S sfp-sfpplus1  ether           1500   1600       9586  48:A9:8A:DA:83:9F
17 RS sfp-sfpplus2  ether           1500   1600       9586  48:A9:8A:DA:83:A0
18 R  bridge1       bridge          1500   1596             48:A9:8A:DA:83:91
19 R  bridge2       bridge          1500   1596             48:A9:8A:DA:83:94
20 R  lo            loopback       65536                    00:00:00:00:00:00
21 R  wireguard1    wg              1384

However, adding a container fails:

[admin@xxx] > /container/add remote-image=alpine interface=ether1
input does not match any value of interface
[admin@xxx] > /container/add remote-image=alpine interface=ether2
input does not match any value of interface
[admin@xxx] > /container/add remote-image=alpine interface=bridge1
input does not match any value of interface

Is there a way to get containers to work on the CR2004?

Thanks for looking!

2

Your question is a bit perplexing. Mikrotik documentation clearly states:

interface (string; Default: ) - veth interface to be used with the container

None of the interfaces you've tried are veth interfaces, therefore they are not appropriate.

3

Just in case:
https://tangentsoft.com/mikrotik/wiki?name=Bridged+Container+VETH