[  490.418691] netdevsim netdevsim643 eni643np1: renamed from eth1
[  490.519324] netdevsim netdevsim277 eni277np1: renamed from eth0
[  490.940648] Could not find device with ifindex 2000 in netnsfd 11
[  490.940841] Could not find netns with fd: 2000
[  490.940942] Cannot link a netdevsim to itself
[  490.941070] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).