[  488.289631] netdevsim netdevsim640 eni640np1: renamed from eth1
[  488.386225] netdevsim netdevsim372 eni372np1: renamed from eth0
[  488.626616] Could not find device with ifindex 2000 in netnsfd 11
[  488.626873] Could not find netns with fd: 2000
[  488.626951] Cannot link a netdevsim to itself
[  488.627041] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).