questions re DHCP/Bootp Relay on SUSE

1. Do Linux implementations of BOOTP/DHCP relay agent use UDP/Datagram Berkely sockets ?
2. On what port DHCP/Bootp server sends unicast BOOTPREPLY/DHCPREPLY UDP replies back to BOOTP/DHCP 

relay agent ?
3. RFC 1542 says: "Relay agent MUST silently discard any received UDP messages whose UDP destination 

port number is BOOTPC (68). " - so what the router (where Relay agent is resident) should do with such  

unicast packets whose UDP destination port number is BOOTPC (68), when they arrive on its interfaces ? 

Examine if the destination port is matching one of the router's own routing interfaces and drop such, 

if not matching - route those to the destination ?
4. What (its own) port BOOTP/DHCP relay agent uses to forward to:
   a) DHCP/Bootp server
   b) client 

5. If BOOTP/DHCP relay agent resides on the router and BOOTPREQUEST/DHCPREQUEST flag indicates that the 

reply to client should be in BROADCAST mode - should  BOOTP/DHCP relay agent/router send BROADCAST 

reply only on the interface, on which BOOTPREQUEST/DHCPREQUEST was originally received or across all 

interfaces (except the one on which BOOTREPLY/DHCPREPLY was received from the server) ?

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