[  484.849585] netdevsim netdevsim668 eni668np1: renamed from eth1
[  484.950731] netdevsim netdevsim437 eni437np1: renamed from eth0
[  485.297711] Could not find device with ifindex 2000 in netnsfd 11
[  485.297895] Could not find netns with fd: 2000
[  485.297987] Cannot link a netdevsim to itself
[  485.298167] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).