Fedora 36 network communication between two pods via DNS

**Describe the bug**

I guess this is more of a question rather than a bug

- Running Fedora 36 all up to date as of 04/09/22
- Running lastest podman-compose devel install
- Started two applications with podman-compose, can access them via browser.
- Running as rootless containers.

The question is, how can one app in a pod communicate to the other app in another pod. One of the apps I'd like to connect to the other one via it's API. It looks like that I can ping the host via IP address but can it be done with DNS.

```
podman-compose version
podman-compose version: 1.0.4
['podman', '--version', '']
using podman version: 4.2.0
podman-compose version 1.0.4
podman --version
podman version 4.2.0
exit code: 0
```

```
host:
arch: amd64
buildahVersion: 1.27.0
cgroupControllers:
- cpu
- io
- memory
- pids
cgroupManager: systemd
cgroupVersion: v2
conmon:
package: conmon-2.1.0-2.fc36.x86_64
path: /usr/bin/conmon
version: 'conmon version 2.1.0, commit: '
cpuUtilization:
idlePercent: 94.45
systemPercent: 4.76
userPercent: 0.79
cpus: 4
distribution:
distribution: fedora
variant: workstation
version: "36"
eventLogger: journald
hostname: fedora
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
kernel: 5.19.6-200.fc36.x86_64
linkmode: dynamic
logDriver: journald
memFree: 5836419072
memTotal: 8294785024
networkBackend: netavark
ociRuntime:
name: crun
package: crun-1.5-1.fc36.x86_64
path: /usr/bin/crun
version: |-
crun version 1.5
commit: 54ebb8ca8bf7e6ddae2eb919f5b82d1d96863dea
spec: 1.0.0
+SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +YAJL
os: linux
remoteSocket:
path: /run/user/1000/podman/podman.sock
security:
apparmorEnabled: false
capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
rootless: true
seccompEnabled: true
seccompProfilePath: /usr/share/containers/seccomp.json
selinuxEnabled: true
serviceIsRemote: false
slirp4netns:
executable: /usr/bin/slirp4netns
package: slirp4netns-1.2.0-0.2.beta.0.fc36.x86_64
version: |-
slirp4netns version 1.2.0-beta.0
commit: 477db14a24ff1a3de3a705e51ca2c4c1fe3dda64
libslirp: 4.6.1
SLIRP_CONFIG_VERSION_MAX: 3
libseccomp: 2.5.3
swapFree: 8294232064
swapTotal: 8294232064
uptime: 0h 3m 42.00s
plugins:
authorization: null
log:
- k8s-file
- none
- passthrough
- journald
network:
- bridge
- macvlan
volume:
- local
registries:
search:
- registry.fedoraproject.org
- registry.access.redhat.com
- docker.io
- quay.io
store:
configFile: /home/jez/.config/containers/storage.conf
containerStore:
number: 2
paused: 0
running: 0
stopped: 2
graphDriverName: overlay
graphOptions: {}
graphRoot: /home/jez/.local/share/containers/storage
graphRootAllocated: 63349719040
graphRootUsed: 5867261952
graphStatus:
Backing Filesystem: btrfs
Native Overlay Diff: "true"
Supports d_type: "true"
Using metacopy: "false"
imageCopyTmpDir: /var/tmp
imageStore:
number: 18
runRoot: /run/user/1000/containers
volumePath: /home/jez/.local/share/containers/storage/volumes
version:
APIVersion: 4.2.0
Built: 1660228937
BuiltTime: Fri Aug 12 00:42:17 2022
GitCommit: ""
GoVersion: go1.18.4
Os: linux
OsArch: linux/amd64
Version: 4.2.0
```