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<p class="MsoNormal"><span style="font-size:11.0pt">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Currently the hosts table is like this:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">+----------------------+------------------+------+-----+---------+----------------+<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| Field | Type | Null | Key | Default | Extra |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">+----------------------+------------------+------+-----+---------+----------------+<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| host_id | int(10) unsigned | NO | PRI | NULL | auto_increment |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| dhcp_identifier | varbinary(128) | NO | MUL | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| dhcp_identifier_type | tinyint(4) | NO | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| dhcp4_subnet_id | int(10) unsigned | YES | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| dhcp6_subnet_id | int(10) unsigned | YES | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| ipv4_address | int(10) unsigned | YES | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| hostname | varchar(255) | YES | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| dhcp4_client_classes | varchar(255) | YES | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">| dhcp6_client_classes | varchar(255) | YES | | NULL | |<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Courier">+----------------------+------------------+------+-----+---------+----------------+<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">This means I can insert two host reservations for the same MAC address on the same subnet id (VLAN).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Will there ever be a time where that is needed?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Could it be useful to make a primary key consisting of dhcp_identifier, dhcp4_subnet_id and dhcp6_subnet_id?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The reason for my question is that the script I currently use, will use a ‘REPLACE INTO’.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">(Yes, I could just rewrite the script and do the tests myself.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">-- <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Med venlig hilsen / With best regards<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Thomas Andersen<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Network Architect<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">IT University of Copenhagen<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Rued Langgaards Vej 7<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">2300 København S<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">Phone: +45 72185249<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">____________________________________________________________________________<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;color:black">**NEVER DISCLOSE YOUR PASSWORD OR SHOE SIZE - NOT EVEN TO YOUR DENTIST**</span><o:p></o:p></p>
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