Network is unreachable

[mocsharp]

Started seeing issues where the docker-container driver is unable to resolve any of the domain names (Network is unreachable).

Builder

docker buildx create --name mybuilder --driver-opt network=host

Dockerfile

FROM busybox:latest

RUN nslookup google.com

Command

docker buildx build --builder mybuilder  --progress plain .

Output

#1 [internal] booting buildkit
#1 pulling image moby/buildkit:buildx-stable-1
#1 pulling image moby/buildkit:buildx-stable-1 4.6s done
#1 creating container buildx_buildkit_mybuilder0
#1 creating container buildx_buildkit_mybuilder0 1.2s done
#1 DONE 5.8s

#2 [internal] load .dockerignore
#2 transferring context:
#2 transferring context: 135B done
#2 DONE 0.2s

#3 [internal] load build definition from Dockerfile
#3 transferring dockerfile: 81B done
#3 DONE 0.2s

#4 [internal] load metadata for docker.io/library/busybox:latest
#4 ...

#5 [auth] library/busybox:pull token for registry-1.docker.io
#5 DONE 0.0s

#4 [internal] load metadata for docker.io/library/busybox:latest
#4 DONE 1.2s

#6 [1/2] FROM docker.io/library/busybox:latest@sha256:b5d6fe0712636ceb7430189de28819e195e8966372edfc2d9409d79402a0dc16
#6 resolve docker.io/library/busybox:latest@sha256:b5d6fe0712636ceb7430189de28819e195e8966372edfc2d9409d79402a0dc16 0.0s done
#6 sha256:4b35f584bb4f862773e2b84b827795b6f01985c7bcebb0696a3eb66318a166a5 2.59MB / 2.59MB 0.2s done
#6 extracting sha256:4b35f584bb4f862773e2b84b827795b6f01985c7bcebb0696a3eb66318a166a5
#6 extracting sha256:4b35f584bb4f862773e2b84b827795b6f01985c7bcebb0696a3eb66318a166a5 0.2s done
#6 DONE 0.5s

#7 [2/2] RUN nslookup google.com
#7 10.15 nslookup: can't connect to remote host: Network is unreachable
#7 ERROR: process "/bin/sh -c nslookup google.com" did not complete successfully: exit code: 1
------
 > [2/2] RUN nslookup google.com:
#7 10.15 nslookup: can't connect to remote host: Network is unreachable
------
WARNING: No output specified with docker-container driver. Build result will only remain in the build cache. To push result image into registry use --push or to load image into docker use --load
Dockerfile:3
--------------------
   1 |     FROM busybox:latest
   2 |     
   3 | >>> RUN nslookup google.com
--------------------
ERROR: failed to solve: process "/bin/sh -c nslookup google.com" did not complete successfully: exit code: 1