[  516.857092] netdevsim netdevsim603 eni603np1: renamed from eth1
[  516.954652] netdevsim netdevsim481 eni481np1: renamed from eth0
[  517.156121] Could not find device with ifindex 2000 in netnsfd 11
[  517.156345] Could not find netns with fd: 2000
[  517.156453] Cannot link a netdevsim to itself
[  517.156590] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).