[  520.814890] netdevsim netdevsim484 eni484np1: renamed from eth0
[  520.911470] netdevsim netdevsim664 eni664np1: renamed from eth1
[  521.122679] Could not find device with ifindex 2000 in netnsfd 11
[  521.122889] Could not find netns with fd: 2000
[  521.122975] Cannot link a netdevsim to itself
[  521.123123] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).