[  524.142155] netdevsim netdevsim619 eni619np1: renamed from eth1
[  524.239627] netdevsim netdevsim343 eni343np1: renamed from eth0
[  524.495529] Could not find device with ifindex 2000 in netnsfd 11
[  524.495741] Could not find netns with fd: 2000
[  524.495833] Cannot link a netdevsim to itself
[  524.495946] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).