Windows 7 Machines do not take reserved IP address from DHCP

dhcpmac addresswindows 7

I have NETGEAR router – WGR614 V6 and have mixed network of Linux machines and windows PCs. I use the router's in-built DHCP. I use 'Address Reservation' feature of the router to reserve IPs based on MAC address. All Linux machines obey the DHCP server and take the IP reserved happily. The two windows 7 PCs however never take the IP I have reserved for their MAC addresses. They are adamant about the lowest IP address available in the network and when I check ipconfig it says that its the preferred IP address. Right now I force IP address on windows PCs by starting all Linux machines before the windows PCs, that way it has no choice but to accept the remaining IPs.

I don't know why windows behaves strangely, even my Nokia e72 and my kindle obey the DHCP server and take the IP I want to give them.

Update: wireshark capture:

"1","0.000000","0.0.0.0","224.0.0.1","IGMP","V2 Membership Query, general"
"2","0.000002","::","ff02::1","ICMPv6","Multicast listener query (Unknown (0x00))"
"3","3.432039","192.168.122.1","224.0.0.251","IGMP","V2 Membership Report / Join group 224.0.0.251"
"4","27.953035","127.0.0.1","127.0.0.1","TCP","trusted-web > 39810 [FIN, ACK] Seq=1 Ack=1 Win=512 Len=0 TSV=8065329 TSER=8005328"
"5","27.953147","127.0.0.1","127.0.0.1","TCP","39810 > trusted-web [FIN, ACK] Seq=1 Ack=2 Win=513 Len=0 TSV=8065329 TSER=8065329"
"6","27.953181","127.0.0.1","127.0.0.1","TCP","trusted-web > 39810 [ACK] Seq=2 Ack=2 Win=512 Len=0 TSV=8065329 TSER=8065329"
"7","27.953365","127.0.0.1","127.0.0.1","TCP","39811 > trusted-web [SYN] Seq=0 Win=32792 Len=0 MSS=16396 SACK_PERM=1 TSV=8065329 TSER=0 WS=6"
"8","27.953393","127.0.0.1","127.0.0.1","TCP","trusted-web > 39811 [SYN, ACK] Seq=0 Ack=1 Win=32768 Len=0 MSS=16396 SACK_PERM=1 TSV=8065329 TSER=8065329 WS=6"
"9","27.953425","127.0.0.1","127.0.0.1","TCP","39811 > trusted-web [ACK] Seq=1 Ack=1 Win=32832 Len=0 TSV=8065329 TSER=8065329"
"10","52.399210","96.17.182.27","192.168.0.50","TCP","http > 54000 [RST] Seq=1 Win=0 Len=0"
"11","54.533438","192.168.1.1","224.0.0.1","IGMP","V2 Membership Query, general"
"20","125.440024","::","ff02::1","ICMPv6","Multicast listener query (Unknown (0x00))"
"21","130.336040","192.168.122.1","224.0.0.251","IGMP","V2 Membership Report / Join group 224.0.0.251"
"22","139.505800","0.0.0.0","255.255.255.255","DHCP","DHCP Request  - Transaction ID 0x824f98c9"
"23","139.506223","Netgear_7b:55:28","","ARP","Who has 192.168.0.41?  Tell 192.168.0.1"
"24","139.567859","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<00>"
"25","139.568249","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<00>"
"26","139.568573","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<20>"
"27","139.805670","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"28","139.921827","Netgear_08:c3:d9","","ARP","Who has 192.168.0.5?  Tell 0.0.0.0"
"29","140.331621","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<20>"
"30","140.332511","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<00>"
"31","140.332902","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<00>"
"32","140.565162","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"33","140.923833","Netgear_08:c3:d9","","ARP","Who has 192.168.0.5?  Tell 0.0.0.0"
"34","141.095485","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<00>"
"35","141.096006","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<00>"
"36","141.096298","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<20>"
"37","141.166329","192.168.0.1","255.255.255.255","DHCP","DHCP ACK      - Transaction ID 0x824f98c9"
"38","141.329445","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"39","142.595848","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"40","142.596739","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<20>"
"41","142.597130","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<00>"
"42","142.597432","192.168.0.5","192.168.0.255","NBNS","Registration NB CMIPC<00>"
"43","142.597447","Netgear_08:c3:d9","","ARP","Who has 192.168.0.5?  Tell 0.0.0.0"
"44","142.598013","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"45","142.599398","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"46","142.599810","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"47","142.600612","0.0.0.0","255.255.255.255","DHCP","DHCP Request  - Transaction ID 0x824f98c9"
"48","142.603482","Netgear_7b:55:28","","ARP","Who has 192.168.0.41?  Tell 192.168.0.1"
"49","143.356855","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"50","144.121244","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"51","144.265745","192.168.0.1","255.255.255.255","DHCP","DHCP ACK      - Transaction ID 0x824f98c9"
"52","145.197853","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"53","145.953702","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"54","146.703652","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"82","163.387239","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"83","164.150880","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"84","164.450586","0.0.0.0","255.255.255.255","DHCP","DHCP Request  - Transaction ID 0x2d72f0ff"
"85","164.451052","Netgear_7b:55:28","","ARP","Who has 192.168.0.41?  Tell 192.168.0.1"
"86","164.915266","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"87","169.688302","0.0.0.0","255.255.255.255","DHCP","DHCP Request  - Transaction ID 0x2d72f0ff"
"88","169.688767","Netgear_7b:55:28","","ARP","Who has 192.168.0.41?  Tell 192.168.0.1"
"89","178.344615","0.0.0.0","255.255.255.255","DHCP","DHCP Request  - Transaction ID 0x2d72f0ff"
"90","178.344967","Netgear_7b:55:28","","ARP","Who has 192.168.0.41?  Tell 192.168.0.1"
"91","178.667732","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"92","178.674442","192.168.0.5","192.168.0.255","UDP","Source port: 6646  Destination port: 6646"
"93","180.130523","192.168.1.1","224.0.0.1","IGMP","V2 Membership Query, general"
"94","180.478037","192.168.0.50","224.0.0.251","IGMP","V2 Membership Report / Join group 224.0.0.251"
"95","189.230117","192.168.0.5","192.168.0.255","UDP","Source port: 6646  Destination port: 6646"
"96","189.367369","192.168.0.5","192.168.0.255","UDP","Source port: 6646  Destination port: 6646"
"97","190.708141","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"98","190.708438","Netgear_08:c3:d9","","ARP","Who has 192.168.0.2?  Tell 192.168.0.5"
"208","191.414902","Netgear_08:c3:d9","","ARP","Who has 192.168.0.47?  Tell 192.168.0.5"
"209","191.415174","Netgear_08:c3:d9","","ARP","Who has 192.168.0.48?  Tell 192.168.0.5"
"210","191.415486","Netgear_08:c3:d9","","ARP","Who has 192.168.0.49?  Tell 192.168.0.5"
"211","191.415778","Netgear_08:c3:d9","","ARP","Who has 192.168.0.52?  Tell 192.168.0.5"
"212","191.416032","Netgear_08:c3:d9","","ARP","Who has 192.168.0.51?  Tell 192.168.0.5"
"225","191.420126","Netgear_08:c3:d9","","ARP","Who has 192.168.0.65?  Tell 192.168.0.5"
"226","191.420400","Netgear_08:c3:d9","","ARP","Who has 192.168.0.66?  Tell 192.168.0.5"
"227","191.420693","Netgear_08:c3:d9","","ARP","Who has 192.168.0.67?  Tell 192.168.0.5"
"228","192.414873","Netgear_08:c3:d9","","ARP","Who has 192.168.0.2?  Tell 192.168.0.5"
"229","192.415189","Netgear_08:c3:d9","","ARP","Who has 192.168.0.3?  Tell 192.168.0.5"
"285","192.432587","Netgear_08:c3:d9","","ARP","Who has 192.168.0.62?  Tell 192.168.0.5"
"286","192.432914","Netgear_08:c3:d9","","ARP","Who has 192.168.0.59?  Tell 192.168.0.5"
"304","193.945658","Netgear_08:c3:d9","","ARP","Who has 192.168.0.77?  Tell 192.168.0.5"
"305","193.945972","Netgear_08:c3:d9","","ARP","Who has 192.168.0.78?  Tell 192.168.0.5"
"358","194.022111","Netgear_08:c3:d9","","ARP","Who has 192.168.0.131?  Tell 192.168.0.5"
"359","194.784144","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"360","194.910489","Netgear_08:c3:d9","","ARP","Who has 192.168.0.68?  Tell 192.168.0.5"
"423","194.930273","Netgear_08:c3:d9","","ARP","Who has 192.168.0.131?  Tell 192.168.0.5"
"424","195.547118","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"425","195.564098","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<1e>"
"426","195.908116","Netgear_08:c3:d9","","ARP","Who has 192.168.0.68?  Tell 192.168.0.5"
"427","195.908590","Netgear_08:c3:d9","","ARP","Who has 192.168.0.69?  Tell 192.168.0.5"
"486","195.926757","Netgear_08:c3:d9","","ARP","Who has 192.168.0.128?  Tell 192.168.0.5"
"487","195.927038","Netgear_08:c3:d9","","ARP","Who has 192.168.0.129?  Tell 192.168.0.5"
"488","195.927329","Netgear_08:c3:d9","","ARP","Who has 192.168.0.130?  Tell 192.168.0.5"
"489","195.927613","Netgear_08:c3:d9","","ARP","Who has 192.168.0.131?  Tell 192.168.0.5"
"490","196.311469","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<1e>"
"491","196.311912","192.168.0.5","192.168.0.255","NBNS","Name query NB ISATAP<00>"
"492","196.694122","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"493","196.710373","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"494","196.823403","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"495","197.075840","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<1e>"
"496","197.086302","Netgear_08:c3:d9","","ARP","Who has 192.168.0.1?  Tell 192.168.0.5"
"497","197.137744","Netgear_08:c3:d9","","ARP","Who has 192.168.0.132?  Tell 192.168.0.5"
"498","197.139270","Netgear_08:c3:d9","","ARP","Who has 192.168.0.133?  Tell 192.168.0.5"
"559","197.227269","Netgear_08:c3:d9","","ARP","Who has 192.168.0.194?  Tell 192.168.0.5"
"560","197.232486","Netgear_08:c3:d9","","ARP","Who has 192.168.0.195?  Tell 192.168.0.5"
"561","197.675435","192.168.0.5","255.255.255.255","DHCP","DHCP Inform   - Transaction ID 0xd145e4cd"
"562","197.839987","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<1e>"
"563","197.903592","Netgear_08:c3:d9","","ARP","Who has 192.168.0.132?  Tell 192.168.0.5"
"626","197.927429","Netgear_08:c3:d9","","ARP","Who has 192.168.0.195?  Tell 192.168.0.5"
"627","198.604891","192.168.0.5","192.168.0.255","BROWSER","Request Announcement CMIPC"
"628","198.614414","192.168.0.5","192.168.0.255","BROWSER","Host Announcement CMIPC, Workstation, Server, NT Workstation, Potential Browser"
"629","198.901675","Netgear_08:c3:d9","","ARP","Who has 192.168.0.132?  Tell 192.168.0.5"
"692","198.921632","Netgear_08:c3:d9","","ARP","Who has 192.168.0.195?  Tell 192.168.0.5"
"693","200.117292","192.168.0.5","192.168.0.255","BROWSER","Request Announcement CMIPC"
"694","200.289479","Netgear_08:c3:d9","","ARP","Who has 192.168.0.196?  Tell 192.168.0.5"
"695","200.305439","Netgear_08:c3:d9","","ARP","Who has 192.168.0.197?  Tell 192.168.0.5"
"752","200.409653","Netgear_08:c3:d9","","ARP","Who has 192.168.0.254?  Tell 192.168.0.5"
"753","200.678657","192.168.0.5","255.255.255.255","DHCP","DHCP Inform   - Transaction ID 0xd145e4cd"
"754","200.898101","Netgear_08:c3:d9","","ARP","Who has 192.168.0.196?  Tell 192.168.0.5"
"812","200.916091","Netgear_08:c3:d9","","ARP","Who has 192.168.0.254?  Tell 192.168.0.5"
"813","201.630054","192.168.0.5","192.168.0.255","BROWSER","Request Announcement CMIPC"
"814","201.911688","Netgear_08:c3:d9","","ARP","Who has 192.168.0.196?  Tell 192.168.0.5"
"872","201.929785","Netgear_08:c3:d9","","ARP","Who has 192.168.0.254?  Tell 192.168.0.5"
"873","203.143206","192.168.0.5","192.168.0.255","BROWSER","Request Announcement CMIPC"
"874","203.556090","Netgear_08:c3:d9","","ARP","Who has 192.168.0.50?  Tell 192.168.0.5"
"875","203.556107","Pegatron_12:e6:bf","","ARP","192.168.0.50 is at e0:69:95:12:e6:bf"
"876","204.656014","192.168.0.5","192.168.0.255","BROWSER","Browser Election Request"
"877","205.670641","192.168.0.5","192.168.0.255","BROWSER","Browser Election Request"
"878","206.683424","192.168.0.5","192.168.0.255","BROWSER","Browser Election Request"
"879","207.697248","192.168.0.5","192.168.0.255","BROWSER","Browser Election Request"
"880","207.956064","127.0.0.1","127.0.0.1","TCP","trusted-web > 34410 [FIN, ACK] Seq=1 Ack=1 Win=32768 Len=0 TSV=8245332 TSER=8185331"
"881","207.956170","127.0.0.1","127.0.0.1","TCP","34410 > trusted-web [FIN, ACK] Seq=1 Ack=2 Win=32832 Len=0 TSV=8245332 TSER=8245332"
"882","207.956204","127.0.0.1","127.0.0.1","TCP","trusted-web > 34410 [ACK] Seq=2 Ack=2 Win=32768 Len=0 TSV=8245332 TSER=8245332"
"883","207.956391","127.0.0.1","127.0.0.1","TCP","34411 > trusted-web [SYN] Seq=0 Win=32792 Len=0 MSS=16396 SACK_PERM=1 TSV=8245332 TSER=0 WS=6"
"884","207.956421","127.0.0.1","127.0.0.1","TCP","trusted-web > 34411 [SYN, ACK] Seq=0 Ack=1 Win=32768 Len=0 MSS=16396 SACK_PERM=1 TSV=8245332 TSER=8245332 WS=6"
"885","207.956455","127.0.0.1","127.0.0.1","TCP","34411 > trusted-web [ACK] Seq=1 Ack=1 Win=32832 Len=0 TSV=8245332 TSER=8245332"
"886","208.711172","192.168.0.5","192.168.0.255","NBNS","Registration NB WORKGROUP<1d>"
"887","208.992484","192.168.0.5","192.168.0.255","NBNS","Name query NB WPAD<00>"

Best Answer

According to your Wireshark capture the client requests an address multiple times via DHCP, but apparently does not process the response. If you have a firewall solution installed and enabled, please disable it for testing - it is well possible that it is interfering with the DHCP address assignment process.

What address does the client get in the end? If it is 192.168.0.5, the client was holding this address long before the DHCP process completed - it simply keeps the old address as the original DHCP request times out.

Furthermore, a DHCP DISCOVER packet is missing in the capture - when experimenting with DHCP leases please do a "full cycle" by issuing a 

ipconfig /release

followed by

ipconfig /renew
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