[  399.989121][ T4740] netdevsim netdevsim372 eni372np1: renamed from eth0
[  400.107886][ T4737] netdevsim netdevsim631 eni631np1: renamed from eth1
[  402.746653][ T4728] Could not find device with ifindex 2000 in netnsfd 11
[  402.748518][ T4728] Could not find netns with fd: 2000
[  402.749426][ T4728] Cannot link a netdevsim to itself
[  402.750550][ T4728] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).