Date: Sun, 23 Oct 2022 17:52:08 +1100 From: Graham Menhennitt <graham@menhennitt.com.au> To: freebsd-ports@freebsd.org Subject: dnsmasq pushing static route over DHCP Message-ID: <fea99e08-abf0-62a0-d61b-887a7e1cc35e@menhennitt.com.au>
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Hello all,
I have a machine running dnsmasq to provide DNS and DHCP services to my
small network. All machines are running FreeBSD 13-stable as of a week
ago. Dnsmasq is installed from the port and is version 2.87.
I use DHCP options to push the default route to the clients. The
relevant bit of my dnamasq.conf is:
dhcp-authoritative
dhcp-range=igb0,XXX.2.73.10,XXX.2.73.99,255.255.255.128,12h
dhcp-option=option:router,XXX.2.73.1
That all works correctly.
# route get default
route to: default
destination: default
mask: default
gateway: XXX.2.73.1
Now I would also like to push a static route to clients to give them
access to another network which is connected via OpenVPN. I've added the
DHCP option 121:
dhcp-option=option:classless-static-route,XXX.3.73.0/24,XXX.2.73.2
That adds the new static route correctly. But it breaks the default route.
# route get XXX.3.73.1
route to: XXX.3.73.1
destination: XXX.3.73.0
mask: 255.255.255.0
gateway: XXX.2.73.2
# route get default
route: route has not been found
I've tried just "option:static-route" instead (option 33). But that
doesn't appear to work at all.
Can somebody please give me some clues. I'll happily admit that I don't
know what I'm doing!
Thanks in advance.
Graham
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<p>Hello all,</p>
<p>I have a machine running dnsmasq to provide DNS and DHCP services
to my small network. All machines are running FreeBSD 13-stable as
of a week ago. Dnsmasq is installed from the port and is version
2.87.</p>
<p>I use DHCP options to push the default route to the clients. The
relevant bit of my dnamasq.conf is:</p>
<p><span style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">dhcp-authoritative
</span></span><br>
<span style="font-family:monospace">dhcp-range=igb0,XXX.2.73.10,XXX.2.73.99,255.255.255.128,12h
</span><br>
<span style="font-family:monospace">dhcp-option=option:router,XXX.2.73.1
<br>
</span></p>
<p>That all works correctly.</p>
<p><span style="font-family:monospace"><span
style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;"># route get
default
</span><br>
route to: default
<br>
destination: default
<br>
mask: default
<br>
gateway: XXX.2.73.1<br>
<br>
</span></span>Now I would also like to push a static route to
clients to give them access to another network which is connected
via OpenVPN. I've added the DHCP option 121:
</p>
<p><span style="font-family:monospace">dhcp-option=option:classless-static-route,XXX.3.73.0/24,XXX.2.73.2</span><br>
<span style="font-family:monospace"></span><span
style="font-family:monospace">
<br>
</span>That adds the new static route correctly. But it breaks the
default route.<span style="font-family:monospace"><br>
</span></p>
<p><span style="font-family:monospace"># route get XXX.3.73.1
<br>
route to: XXX.3.73.1
<br>
destination: XXX.3.73.0
<br>
mask: 255.255.255.0
<br>
gateway: XXX.2.73.2<br>
</span><br>
<span style="font-family:monospace"><span
style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;"># route get
default </span><br>
route: route has not been found
<br>
</span></span></p>
<p><span style="font-family:monospace"><span
style="font-family:monospace"></span></span>I've tried just
"option:static-route" instead (option 33). But that doesn't appear
to work at all.</p>
<p>Can somebody please give me some clues. I'll happily admit that I
don't know what I'm doing!</p>
<p>Thanks in advance.</p>
<p>Graham<br>
</p>
</body>
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