[  474.280273] netdevsim netdevsim456 eni456np1: renamed from eth0
[  474.280675] netdevsim netdevsim543 eni543np1: renamed from eth1
[  474.362698] Could not find device with ifindex 2000 in netnsfd 11
[  474.362841] Could not find netns with fd: 2000
[  474.362964] Cannot link a netdevsim to itself
[  474.363083] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).