Commit ee0f60df authored by Brian Rzycki's avatar Brian Rzycki Committed by Joe Hershberger

net: Quietly ignore DHCP Option 28 (Broadcast Address)

Some DHCP servers (notably dnsmasq) always transmit DHCP Option 28,
Broadcast Address as specified in RFC 2132. Without this patch u-boot
displays the warning:
  *** Unhandled DHCP Option in OFFER/ACK: 28

The patch suppresses the warning and ignores DHCP Option 28. There is
no environment variable to set the broadcast address into and if for
some reason u-boot needs the broadcast it can be calculated from
ipaddr and netmask.
Signed-off-by: default avatarBrian Rzycki <>
parent a655938a
......@@ -728,6 +728,8 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp)
memcpy(&NetOurRootPath, popt + 2, size);
NetOurRootPath[size] = 0;
case 28: /* Ignore Broadcast Address Option */
case 42: /* NTP server IP */
NetCopyIP(&NetNtpServerIP, (popt + 2));
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