[  523.361475] netdevsim netdevsim683 eni683np1: renamed from eth1
[  523.457498] netdevsim netdevsim260 eni260np1: renamed from eth0
[  523.710164] Could not find device with ifindex 2000 in netnsfd 11
[  523.710362] Could not find netns with fd: 2000
[  523.710451] Cannot link a netdevsim to itself
[  523.710553] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).