What software is your PC running? The DHCP client is broken. Look at https://www.ietf.org/rfc/rfc2131.txt paragraph 4.3.6
The DHCP requests your PC is sending have no server-ip option, no, requested-ip option and the ciaddr field is zero. That combination doesn't fit any of the columns in the table, so the request is invalid. If the PC is just booting (or returning from sleep) then it should probably be in INIT-REBOOT state, and should include a requested-ip option. If it did, then dnsmasq would reply. Cheers, Simon. On 05/04/16 11:18, 黎伟强 wrote: > Here you are. > >> To: dnsmasq-discuss@lists.thekelleys.org.uk >> From: si...@thekelleys.org.uk >> Date: Mon, 4 Apr 2016 17:15:32 +0100 >> Subject: Re: [Dnsmasq-discuss] dnsmasq does not respect BOOTP's broadcast >> flag >> > > Please could you post the actual packet capture for that capture, > instead of a screenshot? I need to look at other parts of the packet > which are not shown to understand what's going on. > > (Save as... from the wireshark File menu should do the trick.) > > > Cheers, > > Simon. > > On 01/04/16 03:38, 黎伟强 wrote: >>>> Dear all, I got a router using dnsmasq-2.66 for DHCP >>>> services, and I encountered a bug that the dnsmasq server does not >>>> respond to my PC's DHCPREQUEST( normally it should respond with a >>>> DHCPNAK? ), so it takes an obvious long time to got a new IP for my >>>> PC. So, is this really a bug or it is just something wrong with my >>>> PC(Works well with other DHCP server)? At my first thought, I >>>> think it should be a bug that has been solved, so I reviewed the >>>> latest(ver.2.75) dnsmasq source code, however, neither did it care >>>> about this flag. I also attached a patch for this. >>>> >>>> >>>> >>>> >>>> _______________________________________________ Dnsmasq-discuss >>>> mailing list Dnsmasq-discuss@lists.thekelleys.org.uk >>>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss >>>> >> >> _______________________________________________ >> Dnsmasq-discuss mailing list >> Dnsmasq-discuss@lists.thekelleys.org.uk >> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > >
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