[  517.840609] netdevsim netdevsim485 eni485np1: renamed from eth0
[  517.938979] netdevsim netdevsim720 eni720np1: renamed from eth1
[  518.141738] Could not find device with ifindex 2000 in netnsfd 11
[  518.141928] Could not find netns with fd: 2000
[  518.142035] Cannot link a netdevsim to itself
[  518.142148] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).