Net.IPv4

data Addr

loopbackAddr

broadcastAddr

type Netmask

netmaskA

netmaskB

netmaskC

defaultNetmask

sameNet

liftA1

liftA2

andAddr

orAddr

complAddr

data Precedence

data Packet content

data TypeOfService

data Flags

skip

template

data Protocol

num_prot

prot_num

data Option

data OptType

data OptClass

ipv4unparse