[  523.632283] netdevsim netdevsim572 eni572np1: renamed from eth1
[  523.730323] netdevsim netdevsim443 eni443np1: renamed from eth0
[  523.958740] Could not find device with ifindex 2000 in netnsfd 11
[  523.958901] Could not find netns with fd: 2000
[  523.958989] Cannot link a netdevsim to itself
[  523.959084] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).