[  520.861984] netdevsim netdevsim656 eni656np1: renamed from eth1
[  520.959820] netdevsim netdevsim434 eni434np1: renamed from eth0
[  521.205295] Could not find device with ifindex 2000 in netnsfd 11
[  521.205489] Could not find netns with fd: 2000
[  521.205585] Cannot link a netdevsim to itself
[  521.205710] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).