[  487.041096] netdevsim netdevsim615 eni615np1: renamed from eth1
[  487.138464] netdevsim netdevsim444 eni444np1: renamed from eth0
[  487.370055] Could not find device with ifindex 2000 in netnsfd 11
[  487.370337] Could not find netns with fd: 2000
[  487.370411] Cannot link a netdevsim to itself
[  487.370500] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).