minikube configures the wrong host network interface

[afbjorklund]

When looking at some other issue, I saw that the internal host address was wrong:

                         _             _            
            _         _ ( )           ( )           
  ___ ___  (_)  ___  (_)| |/')  _   _ | |_      __  
/' _ ` _ `\| |/' _ `\| || , <  ( ) ( )| '_`\  /'__`\
| ( ) ( ) || || ( ) || || |\`\ | (_) || |_) )(  ___/
(_) (_) (_)(_)(_) (_)(_)(_) (_)`\___/'(_,__/'`\____)

$ cat /etc/hosts
127.0.0.1	localhost
127.0.1.1	minikube
192.168.50.1	host.minikube.internal
192.168.99.121	control-plane.minikube.internal
$ ping host.minikube.internal
PING host.minikube.internal (192.168.50.1): 56 data bytes
^C
--- host.minikube.internal ping statistics ---
10 packets transmitted, 0 packets received, 100% packet loss

It was supposed to be 192.168.99.1, but picked up the wrong interface (vboxnet1).

 VBoxManage list hostonlyifs
Name:            vboxnet0
GUID:            786f6276-656e-4074-8000-0a0027000000
DHCP:            Disabled
IPAddress:       192.168.99.124
NetworkMask:     255.255.255.0
IPV6Address:     fe80::ce1a:401e:995b:f57a
IPV6NetworkMaskPrefixLength: 64
HardwareAddress: 0a:00:27:00:00:00
MediumType:      Ethernet
Wireless:        No
Status:          Up
VBoxNetworkName: HostInterfaceNetworking-vboxnet0

Name:            vboxnet1
GUID:            786f6276-656e-4174-8000-0a0027000001
DHCP:            Disabled
IPAddress:       192.168.50.1
NetworkMask:     255.255.255.0
IPV6Address:     
IPV6NetworkMaskPrefixLength: 0
HardwareAddress: 0a:00:27:00:00:01
MediumType:      Ethernet
Wireless:        No
Status:          Down
VBoxNetworkName: HostInterfaceNetworking-vboxnet1

There needs to be some code that matches the name of the interfaces.

Instead of just taking the last one and hoping for the best, like now ?

[11janci]

I'd be happy to take a look

[afbjorklund]

@11janci : You will find the code in pkg/minikube/cluster/ip.go,
function HostIP under case driver.VirtualBox. Thanks!