[  495.539261] netdevsim netdevsim337 eni337np1: renamed from eth0
[  495.539491] netdevsim netdevsim692 eni692np1: renamed from eth1
[  495.625029] Could not find device with ifindex 2000 in netnsfd 11
[  495.625184] Could not find netns with fd: 2000
[  495.625286] Cannot link a netdevsim to itself
[  495.625399] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).