[  474.059382] netdevsim netdevsim315 eni315np1: renamed from eth0
[  474.059922] netdevsim netdevsim520 eni520np1: renamed from eth1
[  474.140875] Could not find device with ifindex 2000 in netnsfd 11
[  474.140959] Could not find netns with fd: 2000
[  474.141002] Cannot link a netdevsim to itself
[  474.141048] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).