[  520.081381] netdevsim netdevsim273 eni273np1: renamed from eth0
[  520.179445] netdevsim netdevsim636 eni636np1: renamed from eth1
[  520.376196] Could not find device with ifindex 2000 in netnsfd 11
[  520.376417] Could not find netns with fd: 2000
[  520.376517] Cannot link a netdevsim to itself
[  520.376631] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).