[  524.480036] netdevsim netdevsim507 eni507np1: renamed from eth0
[  524.577787] netdevsim netdevsim535 eni535np1: renamed from eth1
[  524.823670] Could not find device with ifindex 2000 in netnsfd 11
[  524.823857] Could not find netns with fd: 2000
[  524.823959] Cannot link a netdevsim to itself
[  524.824058] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).