Connecting back to the host through a dummy veth interface

Connecting back to the host through a dummy veth interface

[Felix Rubio]

Hi everybody,

I am trying to run a number of rootless podman pods and containers by different 
users, while still being able to talk to each other. To this end I am creating 
a dummy veth interface and publishing all the exposed ports there (this works: 
I can communicate from other host services with those containers), and I am 
also trying to set that dummy veth interface as the default gateway for the 
pods/containers (with the expectation that then they will be able to reach 
each other). However, this is not working... and I am pretty lost.

For example, I am running the following command, trying to connect a ldap 
client container to a ldap server container, unsuccessfully.

podman run --rm --dns=10.255.255.1 --network=pasta:--outbound-
if4=cluster_dns0,--gateway=10.255.255.1 --add-host=ldap.host.internal:host-gateway sh -c "ip add && ip route && ldapwhoami -H ldaps://
ldap.host.internal:1636"

Is this something impossible to do, or am I doing something wrong?

Thank you very much for any help you can provide!

-- 
Felix
Felix Rubio