[  523.296289] netdevsim netdevsim726 eni726np1: renamed from eth1
[  523.394148] netdevsim netdevsim312 eni312np1: renamed from eth0
[  523.623654] Could not find device with ifindex 2000 in netnsfd 11
[  523.623856] Could not find netns with fd: 2000
[  523.623962] Cannot link a netdevsim to itself
[  523.624065] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).