Can't even get going.. network setup error?

Archive Docker Toolbox
1

So I’ve tried this a few times. This is on Windows 10. On running the Docker Quicstart Terminal, I get:

Starting “default”…
(default) Check network to re-create if needed…
Error setting up host only network on machine start: host-only cidr conflicts with the network address of a host interface
Looks like something went wrong in step ´Checking status on default´… Press any key to continue…

I’ve tried removing Docker Toolbox and Virtualbox, as well as all the virtual network devices, and letting it all reinstall. I have no idea what this error means, or where to go, and search hasn’t shown anything close to this error.

2

Crap - so another search found the issue. It looks like Docker Toolbox is defaulted to set the virtual subnet as 192.168.99.0/24, which is what my LAN uses, so it conflicts. Is there a way to change this behavior? Or is my specific IP range of my network preventing me from using docker toolbox?

3

Okay, so I found a solution - I think… I had to add the --virtualbox-hostonly-cidr “x.x.x.1/24” command to choose a new default subnet - but took quite a few tries to figure out how to do that. I had to modify start.sh, and add it into the docker-machine create command line. Looks like I’m okay for now, but this really should be documented better, or better yet, autochoose a different range if that IP already exists!

4

Hey. I’m having exactly the same issue. Could you please give me some more detail on the update to start.sh which you made?

Thanks.

5

Same issue here. Any help would be much appreciated.
Thanks.

6

For future reference, I fixed this issue by removing the default machine and recreate it with specific IP

docker-machine create -d virtualbox --virtualbox-cpu-count=2 --virtualbox-memory=4096 --virtualbox-disk-size=50000 --virtualbox-hostonly-cidr “192.168.33.1/24” default

Works fine now.

7

Solved …
I was working with Docker Toolbox on Windows Host,
For me “Npcap Loopback Adapter” was assigned with static ip of 192.168.99.1
I just browsed to
Control Panel\Network and Internet\Network Connections

Then converted “Npcap” adapter TCP/IPV4 Address to “Obtain an IP address Automatically”
and it worked like a charm.