[ 1021.005267][T12648] netdevsim netdevsim315 eni315np1: renamed from eth0
[ 1021.129558][T12645] netdevsim netdevsim637 eni637np1: renamed from eth1
[ 1022.961826][T12640] Could not find device with ifindex 2000 in netnsfd 11
[ 1022.963388][T12640] Could not find netns with fd: 2000
[ 1022.964483][T12640] Cannot link a netdevsim to itself
[ 1022.965803][T12640] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).