[  456.996044] netdevsim netdevsim511 eni511np1: renamed from eth0
[  456.996850] netdevsim netdevsim602 eni602np1: renamed from eth1
[  457.089111] Could not find device with ifindex 2000 in netnsfd 11
[  457.089264] Could not find netns with fd: 2000
[  457.089368] Cannot link a netdevsim to itself
[  457.089487] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).