[  483.647635] netdevsim netdevsim620 eni620np1: renamed from eth1
[  483.747787] netdevsim netdevsim485 eni485np1: renamed from eth0
[  484.067727] Could not find device with ifindex 2000 in netnsfd 11
[  484.067885] Could not find netns with fd: 2000
[  484.067970] Cannot link a netdevsim to itself
[  484.068082] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).