[SOLVED] DHCP reservation no longer working - Raspberry Pi Forums

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i have dhcp server on windows server 2008 r2 machine configured hand out reserved ip addresses specific mac addresses. have used number of pib , pi2b machines, among others.

ran apt-get update/dist-upgrade move 05-05 release on couple of machines, , no longer reserved addresses. in 1 case, isn't huge problem (although inconvenient) because there monitor attached (actually pitft, show ip address). in second case less convenient, since headless.

examining udp packets, there appears additional data mac address forming identifier in dhcp request. configuration option somewhere can change , restore original behaviour?

ok, found it.

in /etc/dhcpcd.conf there section turns on 1 or other of options

clientid or duid

identifier. clientid option apparently off default, mac address, , duid option on default, mac address, prefixed "random" 8 bytes of data, shown in /etc/dhcpcd.duid

quick edit of config file , reboot, , "all once was", guardian in "the city on edge of forever" said.


raspberrypi



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