[  200.042025][ T4603] netdevsim netdevsim461 eni461np1: renamed from eth0
[  200.079303][ T4605] netdevsim netdevsim637 eni637np1: renamed from eth1
[  200.830761][ T4591] Could not find device with ifindex 2000 in netnsfd 11
[  200.831697][ T4591] Could not find netns with fd: 2000
[  200.832211][ T4591] Cannot link a netdevsim to itself
[  200.832743][ T4591] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).