[ 706.866852][T13050] netdevsim netdevsim365 eni365np1: renamed from eth0 [ 706.890754][T13052] netdevsim netdevsim710 eni710np1: renamed from eth1 [ 707.518149][T13038] Could not find device with ifindex 2000 in netnsfd 11 [ 707.519011][T13038] Could not find netns with fd: 2000 [ 707.519403][T13038] Cannot link a netdevsim to itself [ 707.519931][T13038] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).