[  488.367496] netdevsim netdevsim556 eni556np1: renamed from eth1
[  488.468422] netdevsim netdevsim274 eni274np1: renamed from eth0
[  488.811130] Could not find device with ifindex 2000 in netnsfd 11
[  488.811268] Could not find netns with fd: 2000
[  488.811345] Cannot link a netdevsim to itself
[  488.811436] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).