[  491.963464] netdevsim netdevsim627 eni627np1: renamed from eth1
[  492.059667] netdevsim netdevsim377 eni377np1: renamed from eth0
[  492.285160] Could not find device with ifindex 2000 in netnsfd 11
[  492.285471] Could not find netns with fd: 2000
[  492.285563] Cannot link a netdevsim to itself
[  492.285663] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).