[ 1315.406859][T12062] netdevsim netdevsim607 eni607np1: renamed from eth1 [ 1315.412680][T12064] netdevsim netdevsim272 eni272np1: renamed from eth0 [ 1319.106531][T12056] Could not find device with ifindex 2000 in netnsfd 11 [ 1319.107250][T12056] Could not find netns with fd: 2000 [ 1319.107863][T12056] Cannot link a netdevsim to itself [ 1319.108602][T12056] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).