[Dnsmasq-discuss] help with 'tag' option for multiple subnets

[Jim Vance]

Thanks Fredrik, I'll give that a try

On Thu, Apr 19, 2018 at 1:54 AM, Lindgren Fredrik <
Fredrik.Lindgren at tieto.com> wrote:

> Hi Jimmy,
>
>
> You can have multiple tag checks for each statement
>
>
> i.e:
>
>
> # BIOS ipv4 PXEdhcp-match=bios,option:client-arch, 0
> dhcp-boot=tag:subnet1,tag:bios,pxelinux.0,reposerver,172.16.17.15
> dhcp-boot=tag:subnet2,tag:bios,pxelinux.0,reposerver,192.168.17.15
>
> # UEFI ipv4 PXE
> dhcp-match=set:efi-x86_64,option:client-arch,7
> dhcp-boot=tag:efi-x86_64,tag:subnet2,EFI/bootx64.efi,reposerver,172.16.17.15
>
> There are also tags automatically created for incoming interface
> So if you have multiple interfaces on machine and get the DHCP requests
> for the different subnets from different interfaces you can use that to
> select which range to answer with
> Otherwise you are using dhcp-relay and then there should be some
> indication from that, though haven't looked at any such setup so can't give
> examples for that.
>
> Br,
> Fredrik
>
> ------------------------------
> *Från:* Dnsmasq-discuss <dnsmasq-discuss-bounces at lists.thekelleys.org.uk>
> för Jimmy Vance <flhxs14 at gmail.com>
> *Skickat:* den 18 april 2018 18:18
> *Till:* dnsmasq-discuss at lists.thekelleys.org.uk
> *Ämne:* [Dnsmasq-discuss] help with 'tag' option for multiple subnets
>
>
> I have a simple dnsmasq configuration that handles PXE for BIOS PXE as
> well as UEFI PXE and this works well. I need to add a second subnet and
> planned on using the same system to act as the DHCP server for both
> subnets. I know how to add a tag to options, but for UEFI I already have a
> tag set, and cannot figure out how to add the proper tags to have these
> options serve both subnets properly
>
> Current config
>
> dhcp-range=set:subnet1,172.16.17.100,172.16.17.254,1d
> dhcp-option=tag:subnet1,3,172.16.17.1
> # BIOS ipv4 PXE
> dhcp-boot=pxelinux.0,reposerver,172.16.17.15
> # UEFI ipv4 PXE
> dhcp-match=set:efi-x86_64,option:client-arch,7
> dhcp-boot=tag:efi-x86_64,EFI/bootx64.efi,reposerver,172.16.17.15
>
> Adding additional subnet
>
> dhcp-range=set:subnet1,172.16.17.100,172.16.17.254,1d
> dhcp-option=tag:subnet1,3,172.16.17.1
> dhcp-range=set:subnet2,192.168.17.100,192.168.17.254,1d
> dhcp-option=tag:subnet2,3,192.168.17.1
>
> # BIOS ipv4 PXE
> dhcp-boot=tag:subnet1,pxelinux.0,reposerver,172.16.17.15
> dhcp-boot=tag:subnet2,pxelinux.0,reposerver,192.168.17.15
>
> # UEFI ipv4 PXE
> dhcp-match=set:efi-x86_64,option:client-arch,7
> dhcp-boot=tag:efi-x86_64,EFI/bootx64.efi,reposerver,172.16.17.15
>
> I haven't had any luck running across a similar configuration that
> explains how to handle the existing tag in the UEFI section so I can
> specify different IP addresses for each subnet.
>
> Any ideas or suggestions welcomed
>
>
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