[ 1020.359050][T12646] netdevsim netdevsim624 eni624np1: renamed from eth1 [ 1020.465473][T12577] netdevsim netdevsim264 eni264np1: renamed from eth0 [ 1022.408832][T12724] Could not find device with ifindex 2000 in netnsfd 11 [ 1022.410139][T12724] Could not find netns with fd: 2000 [ 1022.410912][T12724] Cannot link a netdevsim to itself [ 1022.411934][T12724] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).