[  489.301354] netdevsim netdevsim437 eni437np1: renamed from eth0
[  489.398738] netdevsim netdevsim619 eni619np1: renamed from eth1
[  489.611008] Could not find device with ifindex 2000 in netnsfd 11
[  489.611215] Could not find netns with fd: 2000
[  489.611309] Cannot link a netdevsim to itself
[  489.611408] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).