I think you can use --bind-interfaces and --listen-address 127.0.0.2 to
listen only on alternate address.
On 21. 04. 23 3:18, Tony Zhou wrote:
Hi,
I am running dnsmasq 2.86 on openwrt, and have multiple vlans in my
network. dnsmasq works great for dhcp purposes (for both dynamic and
static leases) that I need for all interfaces/vlans. However, some of
the vlans I do not need/want to have dnsmasq providing dns, but
another dns server for content filtering purposes.
I'd prefer to keep both dns servers on the same host/router, but the
way dnsmasq works, either binding to interfaces, or wildcard, binds to
all port 53, so that the 2nd dns server can't bind.
It appears that when dnsmasq is set to bind to interfaces, it has to
either offer both dns and dhcp, or skip dhcp by "--no-dhcp-interface"
argument, but there is no counterpart "--no-dns-interface".
Setting port=0 disables dns service on all interfaces, which is not
what I wanted as well.
I did found there were two discussions regarding this:
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2011q4/005335.html
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q3/015429.html
Running two instances of dnsmasq doesn't resolve this issue, since I
still rely on dnsmasq's dhcp.
Thanks.
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--
Petr Menšík
Software Engineer, RHEL
Red Hat, http://www.redhat.com/
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB
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