[  486.393290] netdevsim netdevsim337 eni337np1: renamed from eth0
[  486.494765] netdevsim netdevsim554 eni554np1: renamed from eth1
[  486.872939] Could not find device with ifindex 2000 in netnsfd 11
[  486.873107] Could not find netns with fd: 2000
[  486.873177] Cannot link a netdevsim to itself
[  486.873272] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).