Container missing network device

[bryteise]

Using Clear Linux 15710 (with Docker 17.05.0-ce) docker run -it busybox I do not get a network interface in the container:

# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever

2: sit0@NONE: <NOARP> mtu 1480 qdisc noop qlen 1
    link/sit 0.0.0.0 brd 0.0.0.0

[bryteise]

Output of docker inspect:

    {
        "Id": "0fcefe65f908ec4947f450c1035b7e6b3780e73fdf7a2b7bc935fc80d5929a5c",
        "Created": "2017-06-06T18:12:34.684166764Z",
        "Path": "sh",
        "Args": [],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 9356,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2017-06-06T18:12:34.944932157Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:00f017a8c2a6e1fe2ffd05c281f27d069d2a99323a8cd514dd35f228ba26d2ff",
        "ResolvConfPath": "/var/lib/docker/containers/0fcefe65f908ec4947f450c1035b7e6b3780e73fdf7a2b7bc935fc80d5929a5c/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/0fcefe65f908ec4947f450c1035b7e6b3780e73fdf7a2b7bc935fc80d5929a5c/hostname",
        "HostsPath": "/var/lib/docker/containers/0fcefe65f908ec4947f450c1035b7e6b3780e73fdf7a2b7bc935fc80d5929a5c/hosts",
        "LogPath": "/var/lib/docker/containers/0fcefe65f908ec4947f450c1035b7e6b3780e73fdf7a2b7bc935fc80d5929a5c/0fcefe65f908ec4947f45
0c1035b7e6b3780e73fdf7a2b7bc935fc80d5929a5c-json.log",
        "Name": "/friendly_franklin",
        "RestartCount": 0,
        "Driver": "overlay",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "cor",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": null,
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DiskQuota": 0,
            "KernelMemory": 0,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": -1,
            "OomKillDisable": false,
            "PidsLimit": 0,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay/08598e55a042b785756da01c84e4abd29c85fc73ddc269ff2da554e4bc094d01/root",
                "MergedDir": "/var/lib/docker/overlay/f5abe51c95ed8932cbb3839d250f95afe750c1d22b7b6273f96b0a94a02374f1/merged",
                "UpperDir": "/var/lib/docker/overlay/f5abe51c95ed8932cbb3839d250f95afe750c1d22b7b6273f96b0a94a02374f1/upper",
                "WorkDir": "/var/lib/docker/overlay/f5abe51c95ed8932cbb3839d250f95afe750c1d22b7b6273f96b0a94a02374f1/work"
            },
            "Name": "overlay"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "0fcefe65f908",
            "Domainname": "",
            "User": "",
            "AttachStdin": true,
            "AttachStdout": true,
            "AttachStderr": true,
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": true,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Cmd": [
                "sh"
            ],
            "Image": "busybox",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {}
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "a07478ac29bd9c81be8a13ebbe1ae48c21216b29f7f0ec50cf2189821c98b212",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "/var/run/docker/netns/a07478ac29bd",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "3dff9dc2cbd7c36d42570550dd825814dd860d7cd79917e5aa9803616c5284cb",
            "Gateway": "172.17.0.1",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "172.17.0.2",
            "IPPrefixLen": 16,
            "IPv6Gateway": "",
            "MacAddress": "02:42:ac:11:00:02",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "48c6f9847b0b5001d71282a8c34322eabd7c42df848793c1cf05a21edf2e34dc",
                    "EndpointID": "3dff9dc2cbd7c36d42570550dd825814dd860d7cd79917e5aa9803616c5284cb",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02"
                }
            }
        }
    }
]

[amshinde]

Just tried this on 15730, didnt see the issue. @bryteise Can you paste the output of docker inspect?

[amshinde]

Just checked this with @bryteise. The network namespace listed in the docker inspect output was not created. Updating to 15730 fixed the issue.

[jodh-intel]

I'm not clear how this "magically fixed" itself between the two releases - could someone provide some details?