[  512.753000] netdevsim netdevsim510 eni510np1: renamed from eth0
[  512.850633] netdevsim netdevsim655 eni655np1: renamed from eth1
[  513.060278] Could not find device with ifindex 2000 in netnsfd 11
[  513.060462] Could not find netns with fd: 2000
[  513.060573] Cannot link a netdevsim to itself
[  513.060697] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).