[Podman] Re: Error: netavark: failed configure macvlan: IO error: failed to add route: Invalid argument (os error 22)

Hi Laurent, Why are you using fe80::/112 as a subnet? This is a link-local address which has a special meaning for ipv6, you should not use this address space and I don't expect this to work. If you use podman network create --ipv6 it will create a random private ipv6 subnet for you. --- Paul On Mon, Nov 21, 2022 at 5:13 PM Laurent Meunier <laurent(a)deltalima.net <mailto:laurent@deltalima.net>> wrote: Hello, I would like to create rootful containers with static IPv4 and IPv6 addresses that are part of my network (containers that somehow act as physical devices on my network).  From what I understand in the documentation [1], the macvlan driver should be my preferred option with netavark. [1] https://github.com/containers/podman/blob/main/docs/tutorials/basic_netwo... <https://github.com/containers/podman/blob/main/docs/tutorials/basic_netwo... My problem is that I get an error when starting a container attached to a macvlan network created with an IPv6 subnet: > Error: netavark: failed configure macvlan: IO error: failed to add route: Invalid argument (os error 22) FYI, as long as the maclan network is created without IPv6 subnet, I can create new podman containers without error. [root@fedora-server ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00      inet 127.0.0.1/8 <http://127.0.0.1/8> scope host lo         valid_lft forever preferred_lft forever      inet6 ::1/128 scope host         valid_lft forever preferred_lft forever 2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000      link/ether 52:54:00:fd:e8:df brd ff:ff:ff:ff:ff:ff      inet 192.168.122.2/24 <http://192.168.122.2/24> brd 192.168.122.255 scope global dynamic noprefixroute enp1s0         valid_lft 2219sec preferred_lft 2219sec      inet6 fe80::5054:ff:fefd:e8df/64 scope link noprefixroute         valid_lft forever preferred_lft forever [root@fedora-server ~]# [root@fedora-server ~]# ip r default via 192.168.122.1 dev enp1s0 proto dhcp src 192.168.122.2 metric 100 192.168.122.0/24 <http://192.168.122.0/24> dev enp1s0 proto kernel scope link src 192.168.122.2 metric 100 [root@fedora-server ~]# [root@fedora-server ~]# podman info |grep -i networkbackend    networkBackend: netavark [root@fedora-server ~]# [root@fedora-server ~]# podman network create \                            --driver macvlan \                            --opt=parent=enp1s0 \                            --subnet 192.168.122.0/24 <http://192.168.122.0/24> \                            --gateway 192.168.122.1 \                            --subnet fe80::/112 \                            mynetwork mynetwork [root@fedora-server ~]# [root@fedora-server ~]# podman run -it --rm \                            --ip=192.168.122.97 \                            --ip6=fe80::97 \                            --network=mynetwork \ registry.fedoraproject.org/fedora:latest <http://registry.fedoraproject.org/fedora:latest> bash Error: netavark: failed configure macvlan: IO error: failed to add route: Invalid argument (os error 22) [root@fedora-server ~]# [root@fedora-server ~]# podman run -it --rm \                            --ip=192.168.122.97 \                            --network=mynetwork \ registry.fedoraproject.org/fedora:latest <http://registry.fedoraproject.org/fedora:latest> bash Error: netavark: failed configure macvlan: IO error: failed to add route: Invalid argument (os error 22) I don't know what I'm doing wrong. Maybe I'm missing something important from the documentation. Any help will be appreciated. Thanks. -- Laurent Meunier <laurent(a)deltalima.net <mailto:laurent@deltalima.net>> _______________________________________________ Podman mailing list -- podman(a)lists.podman.io <mailto:podman@lists.podman.io> To unsubscribe send an email to podman-leave(a)lists.podman.io <mailto:podman-leave@lists.podman.io> _______________________________________________ Podman mailing list -- podman(a)lists.podman.io To unsubscribe send an email to podman-leave(a)lists.podman.io