[  519.792606] netdevsim netdevsim636 eni636np1: renamed from eth1
[  519.891418] netdevsim netdevsim445 eni445np1: renamed from eth0
[  520.096388] Could not find device with ifindex 2000 in netnsfd 11
[  520.096541] Could not find netns with fd: 2000
[  520.096614] Cannot link a netdevsim to itself
[  520.096733] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).