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DLNA Broadcast Wrong IP on interface

merichar

By merichar
in DLNA

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merichar

merichar   0

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Hello!

I am running my Emby server in Docker on TrueNAS SCALE (although I do not think this is an issue with TrueNAS or Docker specifically). The container has access to the Kubernetes network (172.16.x.x) through one interface and my home network through another interface (10.x.x.x). However, the DLNA broadcasts that reach the 10.x.x.x network seem to sometimes or all of the time direct devices to the 172.16.x.x IP, which they cannot access.

Would it be possible for any of either:

  1. Ensure that broadcasts destined for a particular NIC/interface/IP contain packets referring the client to the IP found on that interface
  2. Make the IP or hostname used on all interfaces for DLNA broadcasts configurable
  3. Allow only one interface may be used at a time for broadcasts

To confirm that the two NICs are present in the container as expected: I can see them in the Emby interface, and the output of "hostname -I" from inside the container returns both correct IP addresses. Emby is accessible on both as expected.

I noticed this when Home Assistant, which is present only on my home network (10.x.x.x) was producing errors while trying to access 172.16.x.x to reach Emby, which I had never directed it to.

Thanks!

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merichar

merichar   0

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One interface is provided by Kubernetes in the Kubernetes specific container. The other interface is a bridge to real interface on the machine.

Network settings in TrueNAS:

396255569_Screenshot2022-07-25at11-40-39Applications.png.49d60c6956ba73b30a7b7ad97ed64b87.png

301062787_Screenshot2022-07-25at11-41-04Applications.png.584bda373cb9127af14668c8a48ead0b.png

Output of Hostname -I in the container (redacted specific):

172.16.X.X 10.X.X.X

Here is the output of Docker inspect: 

[
    {
        "Id": "846fd5144a36c3b6831886d12da11f4f0225d025332e5554ce151c5de9df63c0",
        "Created": "2022-07-24T03:25:21.371608127Z",
        "Path": "/usr/bin/tini",
        "Args": [
            "--",
            "/entrypoint.sh"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 50751,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2022-07-24T03:25:28.345811925Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:231469d8273d190b439a155d67ed66997cd64f869ee11815004002f0d2d49342",
        "ResolvConfPath": "/mnt/pool-01/ix-applications/docker/containers/3a80022c82bd254d4383bab5ec86ccf999a02688250b09f6c58a89b24d11dbbd/resolv.conf",
        "HostnamePath": "/mnt/pool-01/ix-applications/docker/containers/3a80022c82bd254d4383bab5ec86ccf999a02688250b09f6c58a89b24d11dbbd/hostname",
        "HostsPath": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/etc-hosts",
        "LogPath": "/mnt/pool-01/ix-applications/docker/containers/846fd5144a36c3b6831886d12da11f4f0225d025332e5554ce151c5de9df63c0/846fd5144a36c3b6831886d12da11f4f0225d025332e5554ce151c5de9df63c0-json.log",
        "Name": "/k8s_emby-01_emby-01-8566c7bbc7-hmsft_ix-emby-01_cbef6df1-bdcb-4d04-871a-82453d62d466_3",
        "RestartCount": 0,
        "Driver": "zfs",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "docker-default",
        "ExecIDs": [
            "7aa466e9351fbf7aefbb34d336dba0a94d859fcda40f5504b1affef836720215"
        ],
        "HostConfig": {
            "Binds": [
                "/mnt/pool-01/apps/nas-01/emby-01/config:/config",
                "/mnt/pool-01/apps/nas-01/emby-01/config-custom:/config-custom",
                "/mnt/pool-01/media:/mnt/media",
                "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~empty-dir/shared:/shared",
                "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~empty-dir/temp:/tmp",
                "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~empty-dir/varlogs:/var/logs",
                "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~projected/kube-api-access-pfthl:/var/run/secrets/kubernetes.io/serviceaccount:ro",
                "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/etc-hosts:/etc/hosts",
                "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/containers/emby-01/196c29bc:/dev/termination-log"
            ],
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "container:3a80022c82bd254d4383bab5ec86ccf999a02688250b09f6c58a89b24d11dbbd",
            "PortBindings": null,
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "CapAdd": null,
            "CapDrop": null,
            "CgroupnsMode": "host",
            "Dns": null,
            "DnsOptions": null,
            "DnsSearch": null,
            "ExtraHosts": null,
            "GroupAdd": [
                "1002",
                "568"
            ],
            "IpcMode": "container:3a80022c82bd254d4383bab5ec86ccf999a02688250b09f6c58a89b24d11dbbd",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 999,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": [
                "no-new-privileges",
                "seccomp=unconfined"
            ],
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "ConsoleSize": [
                0,
                0
            ],
            "Isolation": "",
            "CpuShares": 10,
            "Memory": 8589934592,
            "NanoCpus": 0,
            "CgroupParent": "/kubepods/burstable/podcbef6df1-bdcb-4d04-871a-82453d62d466",
            "BlkioWeight": 0,
            "BlkioWeightDevice": null,
            "BlkioDeviceReadBps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteIOps": null,
            "CpuPeriod": 100000,
            "CpuQuota": 400000,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "KernelMemory": 0,
            "KernelMemoryTCP": 0,
            "MemoryReservation": 0,
            "MemorySwap": 8589934592,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/asound",
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "Dataset": "pool-01/ix-applications/docker/52cae19c83268c4700f61bdb871a3a4b330862e45dfeb64e2b79df090fd2c5b5",
                "Mountpoint": "/mnt/pool-01/ix-applications/docker/zfs/graph/52cae19c83268c4700f61bdb871a3a4b330862e45dfeb64e2b79df090fd2c5b5"
            },
            "Name": "zfs"
        },
        "Mounts": [
            {
                "Type": "bind",
                "Source": "/mnt/pool-01/apps/nas-01/emby-01/config",
                "Destination": "/config",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/mnt/pool-01/apps/nas-01/emby-01/config-custom",
                "Destination": "/config-custom",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/mnt/pool-01/media",
                "Destination": "/mnt/media",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~empty-dir/varlogs",
                "Destination": "/var/logs",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~projected/kube-api-access-pfthl",
                "Destination": "/var/run/secrets/kubernetes.io/serviceaccount",
                "Mode": "ro",
                "RW": false,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/etc-hosts",
                "Destination": "/etc/hosts",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/containers/emby-01/196c29bc",
                "Destination": "/dev/termination-log",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~empty-dir/shared",
                "Destination": "/shared",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/var/lib/kubelet/pods/cbef6df1-bdcb-4d04-871a-82453d62d466/volumes/kubernetes.io~empty-dir/temp",
                "Destination": "/tmp",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            }
        ],
        "Config": {
            "Hostname": "emby-01-8566c7bbc7-hmsft",
            "Domainname": "",
            "User": "989:1002",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "8096/tcp": {},
                "8920/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "USER_ID=568",
                "UMASK=2",
                "UMASK_SET=2",
                "GID=1002",
                "PUID=568",
                "UID=568",
                "PGID=1002",
                "GROUP_ID=1002",
                "S6_READ_ONLY_ROOT=1",
                "NVIDIA_VISIBLE_DEVICES=void",
                "TZ=America/New_York",
                "KUBERNETES_PORT_443_TCP_PROTO=tcp",
                "KUBERNETES_PORT_443_TCP_PORT=443",
                "KUBERNETES_PORT_443_TCP_ADDR=172.17.0.1",
                "KUBERNETES_SERVICE_HOST=172.17.0.1",
                "KUBERNETES_SERVICE_PORT=443",
                "KUBERNETES_SERVICE_PORT_HTTPS=443",
                "KUBERNETES_PORT=tcp://172.17.0.1:443",
                "KUBERNETES_PORT_443_TCP=tcp://172.17.0.1:443",
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "TARGETPLATFORM=linux/amd64",
                "VERSION=focal-20220531",
                "DEBCONF_NONINTERACTIVE_SEEN=true",
                "DEBIAN_FRONTEND=noninteractive",
                "APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn",
                "LANG=en_US.UTF-8",
                "NVIDIA_DRIVER_CAPABILITIES=compute,video,utility"
            ],
            "Cmd": [
                "/entrypoint.sh"
            ],
            "Healthcheck": {
                "Test": [
                    "NONE"
                ]
            },
            "Image": "sha256:231469d8273d190b439a155d67ed66997cd64f869ee11815004002f0d2d49342",
            "Volumes": {
                "/config": {}
            },
            "WorkingDir": "/app",
            "Entrypoint": [
                "/usr/bin/tini",
                "--"
            ],
            "OnBuild": null,
            "Labels": {
                "annotation.io.kubernetes.container.hash": "dba36991",
                "annotation.io.kubernetes.container.ports": "[{\"name\":\"main\",\"containerPort\":80,\"protocol\":\"TCP\"}]",
                "annotation.io.kubernetes.container.restartCount": "3",
                "annotation.io.kubernetes.container.terminationMessagePath": "/dev/termination-log",
                "annotation.io.kubernetes.container.terminationMessagePolicy": "File",
                "annotation.io.kubernetes.pod.terminationGracePeriod": "10",
                "io.kubernetes.container.logpath": "/var/log/pods/ix-emby-01_emby-01-8566c7bbc7-hmsft_cbef6df1-bdcb-4d04-871a-82453d62d466/emby-01/3.log",
                "io.kubernetes.container.name": "emby-01",
                "io.kubernetes.docker.type": "container",
                "io.kubernetes.pod.name": "emby-01-8566c7bbc7-hmsft",
                "io.kubernetes.pod.namespace": "ix-emby-01",
                "io.kubernetes.pod.uid": "cbef6df1-bdcb-4d04-871a-82453d62d466",
                "io.kubernetes.sandbox.id": "3a80022c82bd254d4383bab5ec86ccf999a02688250b09f6c58a89b24d11dbbd",
                "org.opencontainers.image.authors": "Devin Buhl <devin.kray@gmail.com>, Bernd Schorgers <me@bjw-s.dev>",
                "org.opencontainers.image.base.name": "ghcr.io/k8s-at-home/ubuntu-focal",
                "org.opencontainers.image.base.version": "focal-20220531",
                "org.opencontainers.image.created": "2022-06-21 01:22:04+00:00",
                "org.opencontainers.image.source": "https://github.com/truecharts/containers"
            }
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {}
        }
    }
]

Output of kubectl describe: 

Name:         emby-01-8566c7bbc7-hmsft
Namespace:    ix-emby-01
Priority:     0
Node:         ix-truenas/10.X.X.X (REDACTED)
Start Time:   Wed, 20 Jul 2022 16:57:32 -0400
Labels:       app.kubernetes.io/instance=emby-01
              app.kubernetes.io/name=emby
              pod-template-hash=8566c7bbc7
Annotations:  k8s.v1.cni.cncf.io/network-status:
                [{
                    "name": "ix-net",
                    "interface": "eth0",
                    "ips": [
                        "172.16.X.X" (REDACTED)
                    ],
                    "mac": "REDACTED",
                    "default": true,
                    "dns": {}
                },{
                    "name": "ix-emby-01/ix-emby-01-0",
                    "interface": "net1",
                    "ips": [
                        "10.X.X.X" (REDACTED)
                    ],
                    "mac": "REDACTED",
                    "dns": {}
                }]
              k8s.v1.cni.cncf.io/networks: ix-emby-01-0
              k8s.v1.cni.cncf.io/networks-status:
                [{
                    "name": "ix-net",
                    "interface": "eth0",
                    "ips": [
                        "172.16.X.X" (REDACTED)
                    ],
                    "mac": "REDACTED",
                    "default": true,
                    "dns": {}
                },{
                    "name": "ix-emby-01/ix-emby-01-0",
                    "interface": "net1",
                    "ips": [
                        "10.X.X.X" (REDACTED)
                    ],
                    "mac": "REDACTED",
                    "dns": {}
                }]
Status:       Running
IP:           172.16.X.X REDACTED
IPs:
  IP:           172.16.X.X REDACTED
Controlled By:  ReplicaSet/emby-01-8566c7bbc7
Init Containers:
  prepare:
    Container ID:  docker://f4970442412fc258f3c154feaf547ac59e22cd5d3ed98b5db16e8c604f7e3d79
    Image:         ghcr.io/truecharts/multi-init:v0.0.1@sha256:41185dcea1e6f6a035d8090da40aecc6a69cef66b91dc1332a90c9d22861d367
    Image ID:      docker-pullable://ghcr.io/truecharts/multi-init@sha256:41185dcea1e6f6a035d8090da40aecc6a69cef66b91dc1332a90c9d22861d367
    Port:          <none>
    Host Port:     <none>
    Command:
      /bin/sh
      -c
      /bin/bash <<'EOF'
      echo "Automatically correcting permissions..."
      echo "Automatically correcting permissions for /config..."
      if nfs4xdr_getfacl && nfs4xdr_getfacl | grep -qv "Failed to get NFSv4 ACL"; then
        echo "NFSv4 ACLs detected, using nfs4_setfacl to set permissions..."
        nfs4_setfacl -R -a A:g:1002:RWX '/config'
      else
        echo "No NFSv4 ACLs detected, trying chown/chmod..."
        chown -R :1002 '/config'
        chmod -R g+rwx '/config'
      fi
      echo "Automatically correcting permissions for /config-custom..."
      if nfs4xdr_getfacl && nfs4xdr_getfacl | grep -qv "Failed to get NFSv4 ACL"; then
        echo "NFSv4 ACLs detected, using nfs4_setfacl to set permissions..."
        nfs4_setfacl -R -a A:g:1002:RWX '/config-custom'
      else
        echo "No NFSv4 ACLs detected, trying chown/chmod..."
        chown -R :1002 '/config-custom'
        chmod -R g+rwx '/config-custom'
      fi
      echo "Automatically correcting permissions for /mnt/media..."
      if nfs4xdr_getfacl && nfs4xdr_getfacl | grep -qv "Failed to get NFSv4 ACL"; then
        echo "NFSv4 ACLs detected, using nfs4_setfacl to set permissions..."
        nfs4_setfacl -R -a A:g:1002:RWX '/mnt/media'
      else
        echo "No NFSv4 ACLs detected, trying chown/chmod..."
        chown -R :1002 '/mnt/media'
        chmod -R g+rwx '/mnt/media'
      fi
      echo "increasing inotify limits..."
      ( sysctl -w fs.inotify.max_user_watches=524288 || echo "error setting inotify") && ( sysctl -w fs.inotify.max_user_instances=512 || echo "error setting inotify")
      
      EOF
      
    State:          Terminated
      Reason:       Completed
      Exit Code:    0
      Started:      Sat, 23 Jul 2022 23:25:00 -0400
      Finished:     Sat, 23 Jul 2022 23:25:20 -0400
    Ready:          True
    Restart Count:  3
    Limits:
      cpu:     4
      memory:  8Gi
    Requests:
      cpu:        10m
      memory:     50Mi
    Environment:  <none>
    Mounts:
      /config from config (rw)
      /config-custom from config-custom (rw)
      /mnt/media from media (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-pfthl (ro)
Containers:
  emby-01:
    Container ID:   docker://846fd5144a36c3b6831886d12da11f4f0225d025332e5554ce151c5de9df63c0
    Image:          tccr.io/truecharts/emby:v4.7.4.0@sha256:02ef31aa2040f82de124f8595140705ca403f8bbc74fd2682d7ddf6769877723
    Image ID:       docker-pullable://tccr.io/truecharts/emby@sha256:02ef31aa2040f82de124f8595140705ca403f8bbc74fd2682d7ddf6769877723
    Port:           80/TCP
    Host Port:      0/TCP
    State:          Running
      Started:      Sat, 23 Jul 2022 23:25:28 -0400
    Last State:     Terminated
      Reason:       Error
      Exit Code:    255
      Started:      Sat, 23 Jul 2022 00:40:51 -0400
      Finished:     Sat, 23 Jul 2022 23:24:15 -0400
    Ready:          True
    Restart Count:  3
    Limits:
      cpu:     4
      memory:  8Gi
    Requests:
      cpu:      10m
      memory:   50Mi
    Liveness:   tcp-socket :80 delay=10s timeout=5s period=10s #success=1 #failure=5
    Readiness:  tcp-socket :80 delay=10s timeout=5s period=10s #success=1 #failure=5
    Startup:    tcp-socket :80 delay=10s timeout=2s period=5s #success=1 #failure=60
    Environment:
      PUID:                    568
      USER_ID:                 568
      UID:                     568
      UMASK:                   2
      UMASK_SET:               2
      PGID:                    1002
      GROUP_ID:                1002
      GID:                     1002
      S6_READ_ONLY_ROOT:       1
      NVIDIA_VISIBLE_DEVICES:  void
      TZ:                      America/New_York
    Mounts:
      /config from config (rw)
      /config-custom from config-custom (rw)
      /mnt/media from media (rw)
      /shared from shared (rw)
      /tmp from temp (rw)
      /var/logs from varlogs (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-pfthl (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             True 
  ContainersReady   True 
  PodScheduled      True 
Volumes:
  config:
    Type:          HostPath (bare host directory volume)
    Path:          /mnt/pool-01/apps/nas-01/emby-01/config
    HostPathType:  
  config-custom:
    Type:          HostPath (bare host directory volume)
    Path:          /mnt/pool-01/apps/nas-01/emby-01/config-custom
    HostPathType:  
  media:
    Type:          HostPath (bare host directory volume)
    Path:          /mnt/pool-01/media
    HostPathType:  
  shared:
    Type:       EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:     
    SizeLimit:  <unset>
  temp:
    Type:       EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:     
    SizeLimit:  <unset>
  varlogs:
    Type:       EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:     
    SizeLimit:  <unset>
  kube-api-access-pfthl:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   Burstable
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:                      <none>

 

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