Foo Before:

Topology
IPClassA
subnet_address
Topology
IPClassA
Device=1
log_ratio
Topology
IPClassA
Device=1
Port=1
poll_interval
Topology
IPClassC
security_string
Topology
IPClassC
Device=2
Port=2
poll_interval

Foo After:

Topology
IPClassA
subnet_address
Device=1
log_ratio
Device=1
Port=1
poll_interval
IPClassC
security_string
IPClassC
Device=2
Port=2
poll_interval