[  519.966397] netdevsim netdevsim763 eni763np1: renamed from eth1
[  520.063523] netdevsim netdevsim293 eni293np1: renamed from eth0
[  520.306393] Could not find device with ifindex 2000 in netnsfd 11
[  520.306584] Could not find netns with fd: 2000
[  520.306680] Cannot link a netdevsim to itself
[  520.306793] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).