[  474.599776] netdevsim netdevsim331 eni331np1: renamed from eth0
[  474.600310] netdevsim netdevsim691 eni691np1: renamed from eth1
[  474.690282] Could not find device with ifindex 2000 in netnsfd 11
[  474.690426] Could not find netns with fd: 2000
[  474.690527] Cannot link a netdevsim to itself
[  474.690641] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).