[ 1227.834519][T11141] netdevsim netdevsim619 eni619np1: renamed from eth1 [ 1227.856940][T11143] netdevsim netdevsim353 eni353np1: renamed from eth0 [ 1231.269796][T11135] Could not find device with ifindex 2000 in netnsfd 11 [ 1231.270588][T11135] Could not find netns with fd: 2000 [ 1231.271235][T11135] Cannot link a netdevsim to itself [ 1231.272195][T11135] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).