DNSmasq: "failed to send packet: Destination address required"

My system log is entirely full of messages like this:

Mon Sep 13 14:10:43 2021 daemon.err dnsmasq[29122]: failed to send packet: Destination address required
Mon Sep 13 14:10:50 2021 daemon.err dnsmasq[29122]: failed to send packet: Destination address required
Mon Sep 13 14:10:50 2021 daemon.err dnsmasq[29122]: failed to send packet: Destination address required

I'd be super grateful if someone might have a moment to spare to help me debug this. Let me know what info you'd need.

OpenWRT 19.07.8 r11364-ef56c85848, Netgear D7800

post your config ?
is this error generated by the router itself, or the client(s) ?

1 Like

Generated by the router - I quoted the system log.

Extract of the contents of /etc/config/dhcp:

config dnsmasq
	option domainneeded '1'
	option localise_queries '1'
	option local '/lan/'
	option domain 'lan'
	option authoritative '1'
	option readethers '1'
	option leasefile '/tmp/dhcp.leases'
	option resolvfile '/tmp/resolv.conf.auto'
	option localservice '1'
	option rebind_protection '1'
	list rebind_domain 'abc.example.com'

config dhcp 'lan'
	option interface 'lan'
	option start '100'
	option limit '150'
	option leasetime '12h'
	option dhcpv6 'server'
	option ra 'server'
	option ra_management '1'

config dhcp 'wan'
	option interface 'wan'
	option ignore '1'

config odhcpd 'odhcpd'
	option maindhcp '0'
	option leasefile '/tmp/hosts/odhcpd'
	option leasetrigger '/usr/sbin/odhcpd-update'
	option loglevel '4'

config host
	option mac 'A1:B2:C3:D4:E5:F7'
	option name 'Blahblah'
	option dns '1'
	option ip '192.168.0.7'

<snip>