[Bug 1880518] Re: issue while installing docker inside s390x container

[Nayana]

docker not starting inside s390x container. Log shows:

Error starting daemon: Error initializing network controller: error obtaining 
controller instance: failed to create NAT chain DOCKER: iptables failed: 
iptables -t nat -N DOCKER: iptables v1.6.1: can't initialize iptables table 
`nat': iptables who? (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
 (exit status 3)

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https://bugs.launchpad.net/bugs/1880518

Title:
  issue while installing docker inside s390x container

Status in QEMU:
  Incomplete

Bug description:
  This is in reference to 
https://github.com/multiarch/qemu-user-static/issues/108.
  I am facing issue while installing docker inside s390x container under qemu 
on Ubuntu 18.04 host running on amd64.
  Following are the contents of /proc/sys/fs/binfmt_misc/qemu-s390x on Intel 
host after running 
  docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
  enabled
  interpreter /usr/bin/qemu-s390x-static
  flags: F
  offset 0
  magic 7f454c4602020100000000000000000000020016
  mask ffffffffffffff00fffffffffffffffffffeffff
  I could get docker service up with the following trick. 
  printf '{"iptables": false,"ip-masq": false,"bridge": "none" }' > 
/etc/docker/daemon.json
  But even though docker service comes up, images are not getting pulled, 
docker pull fails with the following error.
  failed to register layer: Error processing tar file(exit status 1):

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