[  526.500673] netdevsim netdevsim531 eni531np1: renamed from eth1
[  526.597704] netdevsim netdevsim410 eni410np1: renamed from eth0
[  526.861820] Could not find device with ifindex 2000 in netnsfd 11
[  526.862043] Could not find netns with fd: 2000
[  526.862157] Cannot link a netdevsim to itself
[  526.862269] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).