[  528.088424] netdevsim netdevsim722 eni722np1: renamed from eth1
[  528.184695] netdevsim netdevsim480 eni480np1: renamed from eth0
[  528.390717] Could not find device with ifindex 2000 in netnsfd 11
[  528.390901] Could not find netns with fd: 2000
[  528.391044] Cannot link a netdevsim to itself
[  528.391167] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).