[ 700.228854][T13049] netdevsim netdevsim358 eni358np1: renamed from eth0 [ 700.241767][T13051] netdevsim netdevsim541 eni541np1: renamed from eth1 [ 700.940281][T13036] Could not find device with ifindex 2000 in netnsfd 11 [ 700.941244][T13036] Could not find netns with fd: 2000 [ 700.941760][T13036] Cannot link a netdevsim to itself [ 700.942358][T13036] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).