[  480.760771] netdevsim netdevsim337 eni337np1: renamed from eth0
[  480.862120] netdevsim netdevsim620 eni620np1: renamed from eth1
[  481.175055] Could not find device with ifindex 2000 in netnsfd 11
[  481.175202] Could not find netns with fd: 2000
[  481.175283] Cannot link a netdevsim to itself
[  481.175394] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).