Configure host network

Configure host network in Terminal 2 (Host)

  1. Assign process ID of previously used unshare process to CPID environment variable.

    sudo bash
    pidof unshare
    CPID=$(pidof unshare)
    

    Note the CPID to use it in the next step (Step 3 Bullet 2).

  2. Create veth pair interfaces with h and c prefixes for host and container interfaces respectively

    ip link add name h$CPID type veth peer name c$CPID
    
  3. Assign container interface to be the same as unshare process ID network namespace and check network configuration

    ip link set c$CPID netns $CPID
    ifconfig -a
    
  4. Connect the host interface (with prefix h) to Docker bridge

    ip link set h$CPID master docker0 up