Podman v3.4.2 compose networks block does not update MTU size

[rskntroot]

The following command works fine:

podman network create test_default --opt mtu=9000
as referenced by:
Originally posted by @afbjorklund in #8454 (comment)

However the expected compose.yml variation:

..
networks:
  default:
    driver: bridge
    driver_opts:
      mtu: 9000

Does not work as expected. The mtu is not set for the network that is created.

I have also attempted to use the docker string..

..
    driver_opts:                         
      com.docker.network.driver.mtu: 9000

Which also fails. The mtu is not set for the network that is created.

[vrothberg]

@Luap99 @flouthoc PTAL

[Luap99]

Can you try this with podman v4.1 please.
I don't think we support the docker string but just mtu should work.

[rskntroot]

I was able to upgrade to 4.0.2 on RHEL 8 for both podman and podman-compose. Now podman-compose is not creating a network from the networks: block.

[Luap99]

Podman-compose is a different project and not directly supported by us, I thought you were using docker-compose. Please file an issue in https://github.com/containers/podman-compose instead.

[rskntroot]

@Luap99, I was using docker-compose before upgrading.