[  520.328759] netdevsim netdevsim542 eni542np1: renamed from eth1
[  520.426464] netdevsim netdevsim372 eni372np1: renamed from eth0
[  520.653729] Could not find device with ifindex 2000 in netnsfd 11
[  520.653917] Could not find netns with fd: 2000
[  520.654008] Cannot link a netdevsim to itself
[  520.654110] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).