[  484.511618] netdevsim netdevsim490 eni490np1: renamed from eth0
[  484.513325] netdevsim netdevsim520 eni520np1: renamed from eth1
[  484.601507] Could not find device with ifindex 2000 in netnsfd 11
[  484.601598] Could not find netns with fd: 2000
[  484.601643] Cannot link a netdevsim to itself
[  484.601697] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).