[  511.444526] netdevsim netdevsim519 eni519np1: renamed from eth1
[  511.541445] netdevsim netdevsim510 eni510np1: renamed from eth0
[  511.752443] Could not find device with ifindex 2000 in netnsfd 11
[  511.752631] Could not find netns with fd: 2000
[  511.752702] Cannot link a netdevsim to itself
[  511.752797] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).