type t = {
src : Ipaddr.V4.t;
dst : Ipaddr.V4.t;
id : Cstruct.uint16;
off : Cstruct.uint16;
ttl : Cstruct.uint8;
proto : Cstruct.uint8;
options : Cstruct.t;
}
val pp : Stdlib.Format.formatter -> t -> unit
val equal : t -> t -> bool
type protocol = [
| `ICMP
| `TCP
| `UDP
]