[  488.351531] netdevsim netdevsim508 eni508np1: renamed from eth0
[  488.453317] netdevsim netdevsim601 eni601np1: renamed from eth1
[  488.841022] Could not find device with ifindex 2000 in netnsfd 11
[  488.841170] Could not find netns with fd: 2000
[  488.841243] Cannot link a netdevsim to itself
[  488.841332] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).