Podman and Docker IPv6 Compatibility Differs

**Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)**

/kind bug

**Description**

**Steps to reproduce the issue:**

1. Install CentOS 8 with IPv6 Enabled

2. Install latest PodMan

3. Attempt to start Keycloak instance
```
podman run --rm -p 8080:8080 -e KEYCLOAK_USER=admin -e KEYCLOAK_PASSWORD=admin jboss/keycloak
```

**Describe the results you received:**
```
15:04:20,205 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service org.wildfly.network.interface.private: org.jboss.msc.service.StartException in service org.wildfly.network.interface.private: WFLYSRV0082: failed to resolve interface private
at org.jboss.as.server.services.net.NetworkInterfaceService.start(NetworkInterfaceService.java:96)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1738)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1700)
at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1558)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1363)
at java.lang.Thread.run(Thread.java:748)

15:04:20,234 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("interface" => "private")]) - failure description: {"WFLYCTL0080: Failed services" => {"org.wildfly.network.interface.private" => "WFLYSRV0082: failed to resolve interface private"}}
```

**Describe the results you expected:**

**Additional information you deem important (e.g. issue happens only occasionally):**

**Output of `podman version`:**

```
[centos@cloudctl1 ~]$ podman --version
podman version 1.8.0
```
```
[centos@cloudctl1 ~]$ podman info --debug
debug:
compiler: gc
git commit: ""
go version: go1.12.12
podman version: 1.8.0
host:
BuildahVersion: 1.13.1
CgroupVersion: v1
Conmon:
package: conmon-2.0.6-1.module_el8.1.0+272+3e64ee36.x86_64
path: /usr/bin/conmon
version: 'conmon version 2.0.6, commit: 7a4f0dd7b20a3d4bf9ef3e5cbfac05606b08eac0'
Distribution:
distribution: '"centos"'
version: "8"
IDMappings:
gidmap:
- container_id: 0
host_id: 1000
size: 1
- container_id: 1
host_id: 100000
size: 65536
uidmap:
- container_id: 0
host_id: 1000
size: 1
- container_id: 1
host_id: 100000
size: 65536
MemFree: 64605507584
MemTotal: 67204878336
OCIRuntime:
name: runc
package: runc-1.0.0-64.rc9.module_el8.1.0+272+3e64ee36.x86_64
path: /usr/bin/runc
version: 'runc version spec: 1.0.1-dev'
SwapFree: 33806086144
SwapTotal: 33806086144
arch: amd64
cpus: 24
eventlogger: journald
hostname: cloudctl1.dev.example.com
kernel: 4.18.0-147.5.1.el8_1.x86_64
os: linux
rootless: true
slirp4netns:
Executable: /usr/bin/slirp4netns
Package: slirp4netns-0.4.2-2.git21fdece.module_el8.1.0+272+3e64ee36.x86_64
Version: |-
slirp4netns version 0.4.2+dev
commit: 21fdece2737dc24ffa3f01a341b8a6854f8b13b4
uptime: 20m 14.25s
registries:
search:
- registry.access.redhat.com
- registry.fedoraproject.org
- registry.centos.org
- docker.io
store:
ConfigFile: /home/centos/.config/containers/storage.conf
ContainerStore:
number: 1
GraphDriverName: overlay
GraphOptions:
overlay.mount_program:
Executable: /usr/bin/fuse-overlayfs
Package: fuse-overlayfs-0.7.2-1.module_el8.1.0+272+3e64ee36.x86_64
Version: |-
fuse-overlayfs: version 0.7.2
FUSE library version 3.2.1
using FUSE kernel interface version 7.26
GraphRoot: /home/centos/.local/share/containers/storage
GraphStatus:
Backing Filesystem: xfs
Native Overlay Diff: "false"
Supports d_type: "true"
Using metacopy: "false"
ImageStore:
number: 1
RunRoot: /run/user/1000
VolumePath: /home/centos/.local/share/containers/storage/volumes
```

**Package info (e.g. output of `rpm -q podman` or `apt list podman`):**

```
podman-1.8.0-3.1.el8.x86_64
```

**Additional environment details (AWS, VirtualBox, physical, etc.):**

This works fine on Ubuntu 18.04 with docker-io version 18.09.7, build 2d0083d and IPv6 enabled