[  485.102961] netdevsim netdevsim450 eni450np1: renamed from eth0
[  485.199922] netdevsim netdevsim685 eni685np1: renamed from eth1
[  485.403552] Could not find device with ifindex 2000 in netnsfd 11
[  485.403978] Could not find netns with fd: 2000
[  485.404114] Cannot link a netdevsim to itself
[  485.404242] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).