[  521.273807] netdevsim netdevsim493 eni493np1: renamed from eth0
[  521.370999] netdevsim netdevsim649 eni649np1: renamed from eth1
[  521.616115] Could not find device with ifindex 2000 in netnsfd 11
[  521.616309] Could not find netns with fd: 2000
[  521.616392] Cannot link a netdevsim to itself
[  521.616493] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).