[ 1324.032070][T12059] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1324.076268][T12057] netdevsim netdevsim548 eni548np1: renamed from eth1
[ 1327.779294][T12051] Could not find device with ifindex 2000 in netnsfd 11
[ 1327.780061][T12051] Could not find netns with fd: 2000
[ 1327.780679][T12051] Cannot link a netdevsim to itself
[ 1327.781607][T12051] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).