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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| <c> | | <c> |
| In the message from the | | ... then the server ... |
| client the ... | | |
| | | |
| and and | | |
| <c> | <c> | <c> | | <c> | <c> | <c> |
| giaddr | ciaddr | bcast | | | | |
| (relay) | (cur ip) | bit | | verbs | message types | to |
| is | is | is | | | | |
|---------+----------+-------+---+------------+---------------------+-----------------------------|
| nonzero | * | * | | sends | (all) | 'giaddr' BOOTP relay agent |
| | | | | | | |
|---------+----------+-------+---+------------+---------------------+-----------------------------|
| zero | nonzero | * | | unicasts | DHCPOFFER & DHCPACK | 'ciaddr' client |
| | | | | broadcasts | DHCPNACK | 0xffffffff |
|---------+----------+-------+---+------------+---------------------+-----------------------------|
| zero | zero | 1 | | broadcasts | DHCPOFFER & DHCPACK | 0xffffffff |
| | | | | broadcasts | DHCPNACK | 0xffffffff |
|---------+----------+-------+---+------------+---------------------+-----------------------------|
| zero | zero | 0 | | unicasts | DHCPOFFER & DHCPACK | client hw addr and 'yiaddr' |
| | | | | broadcasts | DHCPNACK | 0xffffffff |
In all cases, when 'giaddr' is zero, the server broadcasts any DHCPNAK
messages to 0xffffffff.
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