Hello all!!

Just observing something strange happening on my router.
I am running openwrt 19.07.5 with updated dnsmasq package, opkg says
dnsmasq - 2.80-16.3

I had to isolate one lan port to use it like a WAN one with PPPoE.
My network config is:

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fdb0:8649:f177::/48'

config interface 'lan'
        option type 'bridge'
        option ifname 'eth0.101'
        option proto 'static'
        option ipaddr 'xxx.xxx.xxx.xxx'
        option netmask '255.255.255.0'
        option ip6assign '60'

config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'

config switch_vlan
        option device 'switch0'
        option vlan '101'
        option ports '0t 1'

config switch_vlan
        option device   switch0
        option vlan     102
        option ports    '0t 4'

config interface 'wan'
        option ifname 'eth0.102'
        option proto 'pppoe'
        option username 'username'
        option password 'pass'
        list dns '208.67.220.220'
        list dns '208.67.222.222'
        list dns '208.67.222.220'
        list dns '208.67.220.222'
        option auto     1

The system seems to work well, except for the fact my logs are flooded by the 
message I posted in the subject:

Fri Jan 29 18:56:23 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:26 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:30 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:36 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:43 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:47 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:52 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:56:58 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:05 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:11 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:17 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:23 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:24 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:25 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:27 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:31 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:33 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:38 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:40 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:41 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:43 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:47 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:51 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:55 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:57:59 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:04 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:11 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:16 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:21 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:25 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:32 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:33 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:34 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:35 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:37 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:41 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:47 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:51 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:58:56 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:00 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:06 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:11 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:17 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:22 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:26 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:32 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:33 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:40 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:41 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:42 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:44 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:46 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:48 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:49 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:53 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:57 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address
Fri Jan 29 18:59:58 2021 daemon.warn dnsmasq-dhcp[1503]: DHCP packet received 
on eth0.102 which has no address

Even tough I noticed no issues until now. Any ideas woud be welcome.
Thanks!

Enrico

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