[  514.866600] netdevsim netdevsim508 eni508np1: renamed from eth0
[  514.964630] netdevsim netdevsim613 eni613np1: renamed from eth1
[  515.182280] Could not find device with ifindex 2000 in netnsfd 11
[  515.182417] Could not find netns with fd: 2000
[  515.182490] Cannot link a netdevsim to itself
[  515.182579] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).