Archive for 2021-06-25

| 2021-06-25
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Docker img ipv6 problem

On my host the ipv6 is disabled. I had to start a docker image, which would like to use ipv6.

This conflict provides this error message:

Error response from daemon: driver failed programming external connectivity on endpoint CONTAINER_NAME(HASH): Error starting userland proxy: listen tcp6 [::]:PORT_NUMBER: socket: address family not supported by protocol

The resolution, to define the IP address in port mapping (for DHCP, with global definition):

docker run -p 0.0.0.0:HOST_PORT:CONTAINER_PORT

Or in docker-compose.yml like this:

version: "3.9"
services:
  SERVICE_NAME:
    image: IMG
    container_name: CONTAINER_NAME
    ports:
      - "0.0.0.0:HOST_PORT:CONTAINER_PORT"
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| 2021-06-23
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Gentoo USB serial passthrough KVM

I have a Conbee II Zigbee receiver. After a restart the USB passthrought stopped working (on the guest VM I always get errors like:

usb 2-2: new low-speed USB device number 25 using uhci_hcd
usb 2-2: Invalid ep0 maxpacket: 64 usb
usb2-port2: unable to enumerate USB device

So I decided, passthrough the USB serial. It’s a little tricky 🙂

    <serial type='dev'>
      <source path='/dev/ttyACM0'/>
      <target type='isa-serial' port='1'>
        <model name='isa-serial'/>
      </target>
    </serial>

The trick is the serial type because it is dev.

src: http://baitisj.blogspot.com/2021/02/serial-device-passthrough-from-linux.html

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