[ 759.437282][T14776] netdevsim netdevsim360 eni360np1: renamed from eth0 [ 759.452710][T14778] netdevsim netdevsim652 eni652np1: renamed from eth1 [ 759.994471][T14764] Could not find device with ifindex 2000 in netnsfd 11 [ 759.994979][T14764] Could not find netns with fd: 2000 [ 759.995333][T14764] Cannot link a netdevsim to itself [ 759.995743][T14764] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).