dnsmasq-dhcp[1503]: DHCP packet received on eth0.102 which has no address

Fri Jan 29 14:15:16 EST 2021

Sorry guys, should have been more careful to explain myself at least.
The message is pretty clear, still I expected packets from that interface to be ignored, since the device is in the wan interface.

# uci show dhcp.wan
dhcp.wan=dhcp
dhcp.wan.interface='wan'
dhcp.wan.ignore='1'

...

thanks!

Enrico

On Fri, 29 Jan 2021, Enrico Mioso wrote:

> Date: Fri, 29 Jan 2021 19:01:26
> From: Enrico Mioso <mrkiko.rs at gmail.com>
> To: openwrt-devel at lists.openwrt.org
> Subject: dnsmasq-dhcp[1503]: DHCP packet received on eth0.102 which has no
>     address
> 
> 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
>