[  487.830135] netdevsim netdevsim504 eni504np1: renamed from eth0
[  487.830838] netdevsim netdevsim669 eni669np1: renamed from eth1
[  487.924611] Could not find device with ifindex 2000 in netnsfd 11
[  487.924703] Could not find netns with fd: 2000
[  487.924746] Cannot link a netdevsim to itself
[  487.924796] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).