[  490.096803] netdevsim netdevsim377 eni377np1: renamed from eth0
[  490.097205] netdevsim netdevsim640 eni640np1: renamed from eth1
[  490.184030] Could not find device with ifindex 2000 in netnsfd 11
[  490.184191] Could not find netns with fd: 2000
[  490.184302] Cannot link a netdevsim to itself
[  490.184424] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).