[  538.885100] netdevsim netdevsim666 eni666np1: renamed from eth1
[  538.985405] netdevsim netdevsim430 eni430np1: renamed from eth0
[  539.326216] Could not find device with ifindex 2000 in netnsfd 11
[  539.326370] Could not find netns with fd: 2000
[  539.326464] Cannot link a netdevsim to itself
[  539.326565] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).