Hi. I'm running dnsmasq as the local DHCP server in a container/VM/jail intended to serve as a router for multiple VMs, and the router VM is set up with multiple vnics, each on a different subnet.
vnic1: Subnet A -> 192.168.11.0 (external) vnic2: Subnet B -> 192.168.21.0 (internal) vnic3: Subnet C -> 192.168.31.0 (storage) The problem I'm having is that as soon as a VM on subnet A requests a DHCP address, dnsmasq will not respond to any future requests from VMs on subnet B or subnet C. If I restart the dnsmasq service, and if the first DHCP request is from subnet B, it won't respond to queries from subnet A/C. Etc. Is this peculiar to the particular version of dnsmasq-2.86? I've tried everything, with and without option bind-interfaces, with and without all interfaces explicitly listed, exclude-interfaces, etc. Any help on this would be greatly appreciated. I've already spent 2 days trying to figure out what was going on. I'm trying to set up containers/VMs. The problem I face is that once I set up a VM on one subnet, VM creation fails for all other subnets. A restart of dnsmasq doesn't help, because then dnsmasq responds to the first and subsequent DHCP requests from a subnet, but stops responding to VMs on other subnets. Thanks very much. Sam My dnsmasq.conf included below for reference. ------------------------------------------ dhcp-authoritative dhcp-lease-max=1000 dhcp-leasefile=/var/cache/dnsmasq/dnsmasq.leases dhcp-rapid-commit log-facility=/var/log/dnsmasq/dnsmasq.log log-queries log-dhcp # NAT Interface except-interface=net0 no-dhcp-interface=net0 domain=zetac.lan # Subnet A interface=net1 bind-interfaces listen-address=192.168.11.1 dhcp-range=set:extl,192.168.11.101,192.168.11.200,12h dhcp-option=tag:extl,option:dns-server,192.168.11.1 dhcp-option=option:netmask,255.255.255.0 dhcp-option=option:domain-name,zetac.lan # Subnet B interface=net2 bind-interfaces listen-address=192.168.21.1 dhcp-range=set:intl,192.168.21.101,192.168.21.200,12h dhcp-option=tag:intl,option:dns-server,192.168.21.1 dhcp-option=option:netmask,255.255.255.0 dhcp-option=option:domain-name,zetac.lan # Subnet B interface=net3 bind-interfaces listen-address=192.168.31.1 dhcp-range=set:intl,192.168.31.101,192.168.31.200,12h dhcp-option=tag:intl,option:dns-server,192.168.31.1 dhcp-option=option:netmask,255.255.255.0 dhcp-option=option:domain-name,zetac.lan bogus-priv filterwin2k no-hosts no-resolv no-poll expand-hosts domain-needed dns-forward-max=150 neg-ttl=3600
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