[  515.728111] netdevsim netdevsim636 eni636np1: renamed from eth1
[  515.825043] netdevsim netdevsim290 eni290np1: renamed from eth0
[  516.054213] Could not find device with ifindex 2000 in netnsfd 11
[  516.054458] Could not find netns with fd: 2000
[  516.054572] Cannot link a netdevsim to itself
[  516.054714] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).