[  483.860679] netdevsim netdevsim300 eni300np1: renamed from eth0
[  483.957608] netdevsim netdevsim680 eni680np1: renamed from eth1
[  484.170047] Could not find device with ifindex 2000 in netnsfd 11
[  484.170367] Could not find netns with fd: 2000
[  484.170458] Cannot link a netdevsim to itself
[  484.170559] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).