[  519.463263] netdevsim netdevsim619 eni619np1: renamed from eth1
[  519.560396] netdevsim netdevsim462 eni462np1: renamed from eth0
[  519.773923] Could not find device with ifindex 2000 in netnsfd 11
[  519.774119] Could not find netns with fd: 2000
[  519.774232] Cannot link a netdevsim to itself
[  519.774343] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).