[  487.953251] netdevsim netdevsim452 eni452np1: renamed from eth0
[  488.050918] netdevsim netdevsim752 eni752np1: renamed from eth1
[  488.289469] Could not find device with ifindex 2000 in netnsfd 11
[  488.289846] Could not find netns with fd: 2000
[  488.289935] Cannot link a netdevsim to itself
[  488.290032] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).