[  510.049486] netdevsim netdevsim674 eni674np1: renamed from eth1
[  510.146858] netdevsim netdevsim500 eni500np1: renamed from eth0
[  510.360844] Could not find device with ifindex 2000 in netnsfd 11
[  510.361025] Could not find netns with fd: 2000
[  510.361111] Cannot link a netdevsim to itself
[  510.361210] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).