[ 1015.643923][T12476] netdevsim netdevsim529 eni529np1: renamed from eth1 [ 1015.755898][T12477] netdevsim netdevsim500 eni500np1: renamed from eth0 [ 1017.546456][T12469] Could not find device with ifindex 2000 in netnsfd 11 [ 1017.547371][T12469] Could not find netns with fd: 2000 [ 1017.547990][T12469] Cannot link a netdevsim to itself [ 1017.548725][T12469] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).