[  483.458363] netdevsim netdevsim499 eni499np1: renamed from eth0
[  483.560216] netdevsim netdevsim657 eni657np1: renamed from eth1
[  483.889753] Could not find device with ifindex 2000 in netnsfd 11
[  483.889872] Could not find netns with fd: 2000
[  483.889951] Cannot link a netdevsim to itself
[  483.890049] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).