[  519.568300] netdevsim netdevsim405 eni405np1: renamed from eth0
[  519.665127] netdevsim netdevsim615 eni615np1: renamed from eth1
[  519.913130] Could not find device with ifindex 2000 in netnsfd 11
[  519.913336] Could not find netns with fd: 2000
[  519.913423] Cannot link a netdevsim to itself
[  519.913522] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).