[  486.678088] netdevsim netdevsim321 eni321np1: renamed from eth0
[  486.680657] netdevsim netdevsim716 eni716np1: renamed from eth1
[  486.774302] Could not find device with ifindex 2000 in netnsfd 11
[  486.774458] Could not find netns with fd: 2000
[  486.774582] Cannot link a netdevsim to itself
[  486.774699] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).