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IPv4 routing: treat "Ipaddr.V4.Prefix.broadcast network" also as broadcast address #430

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Merged
hannesm merged 1 commit into from
Aug 27, 2020
Merged

IPv4 routing: treat "Ipaddr.V4.Prefix.broadcast network" also as broadcast address #430

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4 changes: 3 additions & 1 deletion src/ipv4/routing.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,9 @@ module Make(Log : Logs.LOG) (A : Mirage_protocols.ARP) = struct
open Lwt.Infix

let destination_mac network gateway arp = function
|ip when ip = Ipaddr.V4.broadcast || ip = Ipaddr.V4.any -> (* Broadcast *)
|ip when Ipaddr.V4.(compare ip broadcast) = 0
|| Ipaddr.V4.(compare ip any) = 0
|| Ipaddr.V4.(compare (Prefix.broadcast network) ip) = 0 -> (* Broadcast *)
Lwt.return @@ Ok Macaddr.broadcast
|ip when Ipaddr.V4.is_multicast ip ->
Lwt.return @@ Ok (mac_of_multicast ip)
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