[  521.290941] netdevsim netdevsim393 eni393np1: renamed from eth0
[  521.387721] netdevsim netdevsim556 eni556np1: renamed from eth1
[  521.602397] Could not find device with ifindex 2000 in netnsfd 11
[  521.602597] Could not find netns with fd: 2000
[  521.602711] Cannot link a netdevsim to itself
[  521.602838] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).