[Dnsmasq-discuss] broadcast address equals siaddr

kvaps kvapss at gmail.com
Tue Jul 28 15:58:46 BST 2020


> When I change the SIADDR option for my pxe-clients, the Broadcast
> address (option 28) is also changed to the same value.

This is wrong, Broadcast address never should be the same as SIADDR,
broadcast is the address of subnet, isn't it?

Meanwhile the following DHCP-option is also not working:

--dhcp-option=option:broadcast,172.16.0.255

numeric one is working fine:

--dhcp-option=28,172.16.0.255

Best Regards,
Andrei Kvapil

On Tue, Jun 9, 2020 at 9:27 PM Geert Stappers <stappers at stappers.nl> wrote:
>
> On Tue, Jun 09, 2020 at 09:10:11AM +0200, kvaps wrote:
> > Hi,
> >
> > I'm using Dnsmasq version 2.80 from on Alpine Linux 3.11.5 and I faced
> > with the strange issue:
> >
> > When I change the SIADDR option for my pxe-clients, the Broadcast
> > address (option 28) is also changed to the same value.
> >
> > my configuration:
> >
> > # cat /etc/dnsmasq.d/dhcp-opts/ltsp1
> > tag:ltsp1,option:server-ip-address,10.28.36.188
> > tag:ltsp1,option:tftp-server,ltsp1
> > tag:ltsp1,tag:X86PC,option:bootfile-name,ltsp/grub/i386-pc/core.0
> > tag:ltsp1,tag:X86-64_EFI,option:bootfile-name,ltsp/grub/x86_64-efi/core.efi
> >
> > # cat /etc/dnsmasq.d/dhcp-hosts/m1c12
> > 94:57:a5:d3:ae:ce,94:57:a5:d3:ae:cf,id:*,set:ltsp1,10.28.36.172,m1c12,infinite
> >
> > # cat /etc/dnsmasq.d/global-dhcp.conf
> > dhcp-match=set:iPXE,17,39
> > dhcp-match=set:X86PC,option:client-arch,0
> > dhcp-match=set:X86-64_EFI,option:client-arch,7
> > dhcp-match=set:X86-64_EFI,option:client-arch,9
> >
> >
> > Best Regards,
> > Andrei Kvapil
>
>
> Here at this side of the Internet arrived only parts of the message.
>
> Please retransmitted the whole message.
>
>
> Regards
> Geert Stappers
> --
> Silence is hard to parse
>
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