[  756.413687][T14743] netdevsim netdevsim330 eni330np1: renamed from eth0
[  756.426732][T14745] netdevsim netdevsim621 eni621np1: renamed from eth1
[  756.977536][T14731] Could not find device with ifindex 2000 in netnsfd 11
[  756.978042][T14731] Could not find netns with fd: 2000
[  756.978519][T14731] Cannot link a netdevsim to itself
[  756.978958][T14731] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).