Alter VM Subnet

have edited the my docker preferences in the advanced section, where you can paste in JSON and restart. I have added the below and the application never starts, it says to reset if it hangs (which I do) but gives me no cause as to why it hangs. checking the documentation my JSON looks valid.

config as per the below:

{
“debug” : true,
“experimental” : true,
“bip”: “192.168.1.5/24”,
“fixed-cidr”: “192.168.2.0/24”,
“fixed-cidr-v6”: “2001:db8::/64”,
“mtu”: 1500,
“default-gateway”: “192.168.2.1”,
“default-gateway-v6”: “2001:db8:abcd::89”,
“dns”: [“10.50.0.1”]
}

I even tried removing all but two settings but it still fails to start

does anyone know how to change the subnet?

Thanks

I have found that the below settings work. however my VMs can no longer speak to the outside world, can anyone see why?

Thanks

{
  "debug" : true,
  "bip" : "192.168.16.1/20",
  "dns" : [
    "10.50.0.1"
  ],
  "default-gateway" : "192.168.17.1",
  "experimental" : true,
  "ip-forward" : true,
  "fixed-cidr" : "192.168.17.0/24"
}