Archive for 2021-06-25

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

Or in docker-compose.yml like this:

version: "3.9"
    image: IMG
    container_name: CONTAINER_NAME
      - ""

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'/>

The trick is the serial type because it is dev.