[  486.546696] netdevsim netdevsim603 eni603np1: renamed from eth1
[  486.644168] netdevsim netdevsim436 eni436np1: renamed from eth0
[  486.894897] Could not find device with ifindex 2000 in netnsfd 11
[  486.895072] Could not find netns with fd: 2000
[  486.895166] Cannot link a netdevsim to itself
[  486.895272] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).