On 4/28/22 09:20, Will Dennis wrote:
Hi all,
I currently have dnsmasq set up and working well for the LAN that the
dnsmasq server is on (for our purposes, say 192.168.0.0/24.) Config is
like this currently:
Now, I have now set up a router (layer-3 switch) that has interfaces
to multiple other networks off of it, all having a /28 network mask.
It has been set to be a DHCP relay (“ip helper”) pointing DHCP
requests from these new networks to the dnsmasq server. I cannot seem
to find a “howto” on how to configure dnsmasq to serve multiple dhcp
pools/associated options so it can be the single DHCP/DNS server for
these multiple new networks. In my reading of the man pages, I
**think** I’d have to do something like this in my config to enable this:
domain-needed
bogus-priv
strict-order
no-hosts
dhcp-authoritative
dhcp-leasefile=/var/lib/misc/dnsmasq.leases
domain=nec-labs.com
dhcp-range=192.168.0.20,192.168.0.59,1h
dhcp-option=option:router,192.168.0.1
dhcp-range=set:vlan10,192.168.1.1,192.168.1.13,255.255.255.240,1h
dhcp-option=tag:vlan10,option:router,192.168.1.14
[…]
Am I correct in this? And, I don’t need to tag the original
pool/options, do I?
Here is what I have in my config for multiple subnets and directing
various services. I am running dnsmasq on a seperate host in the lan
subnet. I tag even the default lan for clarity.
# Subnet specific delarations
dhcp-range=lan,192.168.101.100,192.168.101.200,96h
dhcp-range=IOT,192.168.102.100,192.168.102.200,96h
dhcp-range=guest,192.168.103.100,192.168.103.200,72h
dhcp-range=camera,192.168.104.100,192.168.104.200,72h
# Define router
dhcp-option=tag:lan,option:router,192.168.101.1
dhcp-option=tag:IOT,option:router,192.168.102.1
dhcp-option=tag:guest,option:router,192.168.103.1
dhcp-option=tag:camera,option:router,192.168.104.1
# Define DNS servers (DNSmasq server - also DHCP)
dhcp-option=option:dns-server,192.168.101.2
# Define NTP servers
dhcp-option=tag:lan,option:ntp-server,192.168.101.1
dhcp-option=tag:IOT,option:ntp-server,192.168.102.1
dhcp-option=tag:guest,option:ntp-server,192.168.103.1
dhcp-option=tag:camera,option:ntp-server,192.168.104.1
# Common definitions
dhcp-option=option:netmask,255.255.255.0
dhcp-option=15,"mydomain" # Domain name
dhcp-option=101,America/Denver
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