[  517.763460] netdevsim netdevsim616 eni616np1: renamed from eth1
[  517.860418] netdevsim netdevsim272 eni272np1: renamed from eth0
[  518.096446] Could not find device with ifindex 2000 in netnsfd 11
[  518.096638] Could not find netns with fd: 2000
[  518.096723] Cannot link a netdevsim to itself
[  518.096821] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).