[  474.964668] netdevsim netdevsim643 eni643np1: renamed from eth1
[  474.964862] netdevsim netdevsim314 eni314np1: renamed from eth0
[  475.060225] Could not find device with ifindex 2000 in netnsfd 11
[  475.060318] Could not find netns with fd: 2000
[  475.060363] Cannot link a netdevsim to itself
[  475.060414] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).