[  520.674288] netdevsim netdevsim649 eni649np1: renamed from eth1
[  520.772249] netdevsim netdevsim386 eni386np1: renamed from eth0
[  520.983874] Could not find device with ifindex 2000 in netnsfd 11
[  520.984029] Could not find netns with fd: 2000
[  520.984106] Cannot link a netdevsim to itself
[  520.984211] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).