[  491.042143] netdevsim netdevsim638 eni638np1: renamed from eth1
[  491.042527] netdevsim netdevsim363 eni363np1: renamed from eth0
[  491.139263] Could not find device with ifindex 2000 in netnsfd 11
[  491.139365] Could not find netns with fd: 2000
[  491.139422] Cannot link a netdevsim to itself
[  491.139488] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).