[  488.442122] netdevsim netdevsim496 eni496np1: renamed from eth0
[  488.539173] netdevsim netdevsim647 eni647np1: renamed from eth1
[  488.749469] Could not find device with ifindex 2000 in netnsfd 11
[  488.749770] Could not find netns with fd: 2000
[  488.749872] Cannot link a netdevsim to itself
[  488.750018] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).