[ 1226.109570][T11143] netdevsim netdevsim577 eni577np1: renamed from eth1 [ 1226.229993][T11144] netdevsim netdevsim331 eni331np1: renamed from eth0 [ 1229.476193][T11136] Could not find device with ifindex 2000 in netnsfd 11 [ 1229.476997][T11136] Could not find netns with fd: 2000 [ 1229.477605][T11136] Cannot link a netdevsim to itself [ 1229.478316][T11136] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).