[  523.479147] netdevsim netdevsim260 eni260np1: renamed from eth0
[  523.576480] netdevsim netdevsim618 eni618np1: renamed from eth1
[  523.814908] Could not find device with ifindex 2000 in netnsfd 11
[  523.815096] Could not find netns with fd: 2000
[  523.815192] Cannot link a netdevsim to itself
[  523.815309] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).