[  520.149122] netdevsim netdevsim463 eni463np1: renamed from eth0
[  520.247108] netdevsim netdevsim568 eni568np1: renamed from eth1
[  520.446521] Could not find device with ifindex 2000 in netnsfd 11
[  520.446660] Could not find netns with fd: 2000
[  520.446731] Cannot link a netdevsim to itself
[  520.446817] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).