[  517.563988] netdevsim netdevsim670 eni670np1: renamed from eth1
[  517.660838] netdevsim netdevsim373 eni373np1: renamed from eth0
[  517.881783] Could not find device with ifindex 2000 in netnsfd 11
[  517.881977] Could not find netns with fd: 2000
[  517.882048] Cannot link a netdevsim to itself
[  517.882133] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).