[  510.871165] netdevsim netdevsim337 eni337np1: renamed from eth0
[  510.968406] netdevsim netdevsim555 eni555np1: renamed from eth1
[  511.198130] Could not find device with ifindex 2000 in netnsfd 11
[  511.198280] Could not find netns with fd: 2000
[  511.198351] Cannot link a netdevsim to itself
[  511.198437] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).