BOOTP/DHCP turn on Flags [Broadcast]

lejonpart · Jan 25, 2019, 2:49 PM

Hi

I have run in to a little issue I hope you guys can help me with. IPTV-Device sends a specific DHCP request and I want to mimic this to get an ip from my provider. So far I have managed to create most of the request but I cant figure out how to set the Broadcast flag?!

Regards Christian

My attempt but it don't like the line "always-broadcast yes"

interface "igb0.269" {

        supersede interface-mtu 0;
# DHCP Protocol Timing Values

# DHCP Protocol Options
        send dhcp-class-identifier "VIASAT:IPTV:STB";;
        request Domain-Name-Server, Default-Gateway, Subnet-Mask, Domain-Name TFTP, BF, BS, Vendor-Option;;
        always-broadcast yes;;

        script "/usr/local/sbin/pfSense-dhclient-script";
}

Original traffic from IPTV-device (yea im still missing the Option 43)

12:16:13.387448 00:26:d9:e1:14:5c > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 590: (tos 0x0, ttl 64, id 2, offset 0, flags [DF], proto UDP (17), length 576)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:26:d9:e1:14:5c, length 548, xid 0xda38, secs 124, Flags [Broadcast]
Client-Ethernet-Address 00:26:d9:e1:14:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Parameter-Request Option 55, length 9:
Domain-Name-Server, Default-Gateway, Subnet-Mask, Domain-Name
TFTP, BF, BS, Vendor-Option
Option 194
Client-ID Option 61, length 7: ether 00:26:d9:e1:14:5c
Vendor-Option Option 43, length 20: 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0
Vendor-Class Option 60, length 15: "VIASAT:IPTV:STB"