[ 1312.800110][T11140] netdevsim netdevsim347 eni347np1: renamed from eth0 [ 1312.823992][T11138] netdevsim netdevsim577 eni577np1: renamed from eth1 [ 1316.732049][T11132] Could not find device with ifindex 2000 in netnsfd 11 [ 1316.733133][T11132] Could not find netns with fd: 2000 [ 1316.734392][T11132] Cannot link a netdevsim to itself [ 1316.735549][T11132] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).