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: Brian Rzycki bmr@freescale.com --- net/bootp.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/bootp.c b/net/bootp.c index 87e30ab..8df9fec 100644 --- a/net/bootp.c +++ b/net/bootp.c @@ -728,6 +728,8 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) memcpy(&NetOurRootPath, popt + 2, size); NetOurRootPath[size] = 0; break; + case 28: /* Ignore Broadcast Address Option */ + break; #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) case 42: /* NTP server IP */ NetCopyIP(&NetNtpServerIP, (popt + 2));