[  483.952618] netdevsim netdevsim639 eni639np1: renamed from eth1
[  484.052799] netdevsim netdevsim372 eni372np1: renamed from eth0
[  484.412742] Could not find device with ifindex 2000 in netnsfd 11
[  484.412933] Could not find netns with fd: 2000
[  484.413033] Cannot link a netdevsim to itself
[  484.413163] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).