crc: [BUG] crc couldn't resolve domains even with "-n 8.8.8.8" flag

General information

• OS: macOS
• Hypervisor: hyperkit
• Did you run crc setup before starting it (Yes/No)? Yes

CRC version

# Put `crc version` output here
crc version: 1.9.0+a68b5e0
OpenShift version: 4.3.10 (embedded in binary)

CRC status

# Put `crc status` output here
CRC VM:          Running
OpenShift:       Running (v4.3.10)
Disk Usage:      15.54GB of 32.72GB (Inside the CRC VM)
Cache Usage:     12.09GB
Cache Directory: /Users/brightzheng/.crc/cache

CRC config

# Put `crc config view` output here

nothing customized so no output

Steps to reproduce

1. provision CRC

crc start -c 4 -m 8192 -p pullsecret -n 8.8.8.8 --log-level debug

1. ssh into the VM & test – note: no 8.8.8.8 in /etc/resolv.conf:

ssh -i ~/.crc/machines/crc/id_rsa core@"$(crc ip)"
[core@crc-bq5fv-master-0 ~]$ cat /etc/resolv.conf
# Generated by CRC
search crc.testing
nameserver 10.88.0.8
nameserver 192.168.64.1
nameserver fe80::10cf:80e8:f43c:3191%enp0s1

[core@crc-bq5fv-master-0 ~]$ nc -vz quay.io 443
Ncat: Version 7.70 ( https://nmap.org/ncat )
Ncat: Could not resolve hostname "quay.io": Name or service not known. QUITTING.

[core@crc-bq5fv-master-0 ~]$ exit

1. deploy and test

$ eval $(crc oc-env)
$ oc login -u kubeadmin -p $KUBEADMIN_PASSWORD https://api.crc.testing:6443

$ oc run nginx --image=bitnami/nginx

$ oc get pod
NAME                                               READY   STATUS             RESTARTS   AGE
nginx-7b4746f4d-tgvlc                              0/1     ImagePullBackOff   0          2m54s

$ oc describe pod nginx-7b4746f4d-tgvlc
Events:
  Type     Reason     Age                 From                         Message
  ----     ------     ----                ----                         -------
  Normal   Scheduled  <unknown>           default-scheduler            Successfully assigned open-cluster-management/nginx-7b4746f4d-tgvlc to crc-bq5fv-master-0
  Warning  Failed     19s                 kubelet, crc-bq5fv-master-0  Failed to pull image "bitnami/nginx": rpc error: code = Unknown desc = error pinging docker registry registry-1.docker.io: Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io on [fe80::10cf:80e8:f43c:3191%enp0s1]:53: read udp [fe80::dca0:13a6:55f9:4ab9%enp0s1]:35790->[fe80::10cf:80e8:f43c:3191%enp0s1]:53: read: connection refused
  Warning  Failed     19s                 kubelet, crc-bq5fv-master-0  Error: ErrImagePull
  Normal   BackOff    19s                 kubelet, crc-bq5fv-master-0  Back-off pulling image "bitnami/nginx"
  Warning  Failed     19s                 kubelet, crc-bq5fv-master-0  Error: ImagePullBackOff
  Normal   Pulling    7s (x2 over 2m20s)  kubelet, crc-bq5fv-master-0  Pulling image "bitnami/nginx"

Expected

The 8.8.8.8 should be used to update /etc/resolv.conf and the sample deploy should work properly without any ImagePullBackOff issue.

Actual

No access to the Internet.