[ 1316.960007][T12057] netdevsim netdevsim276 eni276np1: renamed from eth0 [ 1316.981609][T12055] netdevsim netdevsim614 eni614np1: renamed from eth1 [ 1320.527964][T12049] Could not find device with ifindex 2000 in netnsfd 11 [ 1320.528782][T12049] Could not find netns with fd: 2000 [ 1320.529372][T12049] Cannot link a netdevsim to itself [ 1320.530033][T12049] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).