[  520.432694] netdevsim netdevsim560 eni560np1: renamed from eth1
[  520.529022] netdevsim netdevsim421 eni421np1: renamed from eth0
[  520.757846] Could not find device with ifindex 2000 in netnsfd 11
[  520.758067] Could not find netns with fd: 2000
[  520.758172] Cannot link a netdevsim to itself
[  520.758302] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).