[ 1218.676291][T11144] netdevsim netdevsim710 eni710np1: renamed from eth1 [ 1218.688320][T11146] netdevsim netdevsim464 eni464np1: renamed from eth0 [ 1221.905946][T11138] Could not find device with ifindex 2000 in netnsfd 11 [ 1221.906642][T11138] Could not find netns with fd: 2000 [ 1221.907197][T11138] Cannot link a netdevsim to itself [ 1221.907909][T11138] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).