[  519.964269] netdevsim netdevsim732 eni732np1: renamed from eth1
[  520.061740] netdevsim netdevsim507 eni507np1: renamed from eth0
[  520.321120] Could not find device with ifindex 2000 in netnsfd 11
[  520.321349] Could not find netns with fd: 2000
[  520.321460] Cannot link a netdevsim to itself
[  520.321577] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).