[  844.796552][T15770] netdevsim netdevsim503 eni503np1: renamed from eth0
[  844.816612][T15767] netdevsim netdevsim562 eni562np1: renamed from eth1
[  845.574591][T15756] Could not find device with ifindex 2000 in netnsfd 11
[  845.575228][T15756] Could not find netns with fd: 2000
[  845.575658][T15756] Cannot link a netdevsim to itself
[  845.576458][T15756] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).