[  521.552182] netdevsim netdevsim700 eni700np1: renamed from eth1
[  521.649439] netdevsim netdevsim401 eni401np1: renamed from eth0
[  521.872255] Could not find device with ifindex 2000 in netnsfd 11
[  521.872418] Could not find netns with fd: 2000
[  521.872498] Cannot link a netdevsim to itself
[  521.872587] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).