YAMon 3.4.7 -- lots of data in no known MAC

I am running YAMon 3.4.7 and am having a traffic reporting problem. A great deal of my traffic keeps going to "No known MAC" with "UN.KN.OW.N0.0M.AC" as the mac address.

FW: OpenWrt 18.06.4 r7808-ef686b7292 / LuCI openwrt-18.06 branch (git-19.170.32094-4d6d8bc)

Router: Netgear R7800 connected to bridged Netgear C7000 as modem only

Configured for /24 operation with standard wifi 2.4 and 5, IPv6 disabled. There are no special tweaks or operations other than adding the YAMon package using recommended configuration from the author.

Here are the relevant iptables entries created by YAMon.

Chain YAMON34v4 (1 references)
target     prot opt source               destination         
YAMON34v4_gp_Unknown  all  --  anywhere             DW-TPYOGA12.lan     
YAMON34v4_gp_Unknown  all  --  DW-TPYOGA12.lan      anywhere            
RETURN     all  --  anywhere             DW-TPYOGA12.lan     
RETURN     all  --  DW-TPYOGA12.lan      anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.89        
YAMON34v4_gp_Unknown  all  --  192.168.1.89         anywhere            
RETURN     all  --  anywhere             192.168.1.89        
RETURN     all  --  192.168.1.89         anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             Jadon-PC.lan        
YAMON34v4_gp_Unknown  all  --  Jadon-PC.lan         anywhere            
RETURN     all  --  anywhere             Jadon-PC.lan        
RETURN     all  --  Jadon-PC.lan         anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             WNR1000v2.lan       
YAMON34v4_gp_Unknown  all  --  WNR1000v2.lan        anywhere            
RETURN     all  --  anywhere             WNR1000v2.lan       
RETURN     all  --  WNR1000v2.lan        anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             XBOXONE.lan         
YAMON34v4_gp_Unknown  all  --  XBOXONE.lan          anywhere            
RETURN     all  --  anywhere             XBOXONE.lan         
RETURN     all  --  XBOXONE.lan          anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             Samsung.lan         
YAMON34v4_gp_Unknown  all  --  Samsung.lan          anywhere            
RETURN     all  --  anywhere             Samsung.lan         
RETURN     all  --  Samsung.lan          anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             169.254.50.162      
YAMON34v4_gp_Unknown  all  --  169.254.50.162       anywhere            
RETURN     all  --  anywhere             169.254.50.162      
RETURN     all  --  169.254.50.162       anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             XBOX-ONE.lan        
YAMON34v4_gp_Unknown  all  --  XBOX-ONE.lan         anywhere            
RETURN     all  --  anywhere             XBOX-ONE.lan        
RETURN     all  --  XBOX-ONE.lan         anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.72        
YAMON34v4_gp_Unknown  all  --  192.168.1.72         anywhere            
RETURN     all  --  anywhere             192.168.1.72        
RETURN     all  --  192.168.1.72         anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             c-73-217-238-1.hsd1.mo.comcast.net 
YAMON34v4_gp_Unknown  all  --  c-73-217-238-1.hsd1.mo.comcast.net  anywhere            
RETURN     all  --  anywhere             c-73-217-238-1.hsd1.mo.comcast.net 
RETURN     all  --  c-73-217-238-1.hsd1.mo.comcast.net  anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.240       
YAMON34v4_gp_Unknown  all  --  192.168.1.240        anywhere            
RETURN     all  --  anywhere             192.168.1.240       
RETURN     all  --  192.168.1.240        anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             yeelink-light-strip2_miio133766432.lan 
YAMON34v4_gp_Unknown  all  --  yeelink-light-strip2_miio133766432.lan  anywhere            
RETURN     all  --  anywhere             yeelink-light-strip2_miio133766432.lan 
RETURN     all  --  yeelink-light-strip2_miio133766432.lan  anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             Auriumans-GS8.lan   
YAMON34v4_gp_Unknown  all  --  Auriumans-GS8.lan    anywhere            
RETURN     all  --  anywhere             Auriumans-GS8.lan   
RETURN     all  --  Auriumans-GS8.lan    anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.114       
YAMON34v4_gp_Unknown  all  --  192.168.1.114        anywhere            
RETURN     all  --  anywhere             192.168.1.114       
RETURN     all  --  192.168.1.114        anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.203       
YAMON34v4_gp_Unknown  all  --  192.168.1.203        anywhere            
RETURN     all  --  anywhere             192.168.1.203       
RETURN     all  --  192.168.1.203        anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.199       
YAMON34v4_gp_Unknown  all  --  192.168.1.199        anywhere            
RETURN     all  --  anywhere             192.168.1.199       
RETURN     all  --  192.168.1.199        anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             iPhone.lan          
YAMON34v4_gp_Unknown  all  --  iPhone.lan           anywhere            
RETURN     all  --  anywhere             iPhone.lan          
RETURN     all  --  iPhone.lan           anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             amazon-a80258c62.lan 
YAMON34v4_gp_Unknown  all  --  amazon-a80258c62.lan  anywhere            
RETURN     all  --  anywhere             amazon-a80258c62.lan 
RETURN     all  --  amazon-a80258c62.lan  anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             amazon-8e2f0e347.lan 
YAMON34v4_gp_Unknown  all  --  amazon-8e2f0e347.lan  anywhere            
RETURN     all  --  anywhere             amazon-8e2f0e347.lan 
RETURN     all  --  amazon-8e2f0e347.lan  anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             ZGalaxy-Note9.lan   
YAMON34v4_gp_Unknown  all  --  ZGalaxy-Note9.lan    anywhere            
RETURN     all  --  anywhere             ZGalaxy-Note9.lan   
RETURN     all  --  ZGalaxy-Note9.lan    anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             Galaxy-S10.lan      
YAMON34v4_gp_Unknown  all  --  Galaxy-S10.lan       anywhere            
RETURN     all  --  anywhere             Galaxy-S10.lan      
RETURN     all  --  Galaxy-S10.lan       anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.59        
YAMON34v4_gp_Unknown  all  --  192.168.1.59         anywhere            
RETURN     all  --  anywhere             192.168.1.59        
RETURN     all  --  192.168.1.59         anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             Galaxy-Note9.lan    
YAMON34v4_gp_Unknown  all  --  Galaxy-Note9.lan     anywhere            
RETURN     all  --  anywhere             Galaxy-Note9.lan    
RETURN     all  --  Galaxy-Note9.lan     anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             192.168.1.104       
YAMON34v4_gp_Unknown  all  --  192.168.1.104        anywhere            
RETURN     all  --  anywhere             192.168.1.104       
RETURN     all  --  192.168.1.104        anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             09AA01AC30180BTY.lan 
YAMON34v4_gp_Unknown  all  --  09AA01AC30180BTY.lan  anywhere            
RETURN     all  --  anywhere             09AA01AC30180BTY.lan 
RETURN     all  --  09AA01AC30180BTY.lan  anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             172.16.12.1         
YAMON34v4_gp_Unknown  all  --  172.16.12.1          anywhere            
RETURN     all  --  anywhere             172.16.12.1         
RETURN     all  --  172.16.12.1          anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             169.254.190.124     
YAMON34v4_gp_Unknown  all  --  169.254.190.124      anywhere            
RETURN     all  --  anywhere             169.254.190.124     
RETURN     all  --  169.254.190.124      anywhere            
YAMON34v4_gp_Unknown  all  --  anywhere             169.254.156.165     
YAMON34v4_gp_Unknown  all  --  169.254.156.165      anywhere            
RETURN     all  --  anywhere             169.254.156.165     
RETURN     all  --  169.254.156.165      anywhere            
YAMON34v4_gp_Hardware  all  --  anywhere             c-73-217-239-223.hsd1.mo.comcast.net 
YAMON34v4_gp_Hardware  all  --  c-73-217-239-223.hsd1.mo.comcast.net  anywhere            
RETURN     all  --  anywhere             c-73-217-239-223.hsd1.mo.comcast.net 
RETURN     all  --  c-73-217-239-223.hsd1.mo.comcast.net  anywhere            
YAMON34v4_gp_Hardware  all  --  anywhere             Mandy-Pandy.lan     
YAMON34v4_gp_Hardware  all  --  Mandy-Pandy.lan      anywhere            
RETURN     all  --  anywhere             Mandy-Pandy.lan     
RETURN     all  --  Mandy-Pandy.lan      anywhere            
RETURN     all  --  anywhere             anywhere            

Chain YAMON34v4Entry (3 references)
target     prot opt source               destination         
YAMON34v4Local  all  --  anywhere             localhost           [goto] 
YAMON34v4Local  all  --  localhost            anywhere            [goto] 
YAMON34v4Local  all  --  anywhere             all-systems.mcast.net [goto] 
YAMON34v4Local  all  --  all-systems.mcast.net  anywhere            [goto] 
YAMON34v4Local  all  --  anywhere             255.255.255.255     [goto] 
YAMON34v4Local  all  --  255.255.255.255      anywhere            [goto] 
YAMON34v4Local  all  --  192.168.0.0/16       192.168.0.0/16      [goto] 
YAMON34v4Local  all  --  192.168.0.0/16       10.0.0.0/8          [goto] 
YAMON34v4Local  all  --  192.168.0.0/16       172.16.0.0/12       [goto] 
YAMON34v4Local  all  --  10.0.0.0/8           192.168.0.0/16      [goto] 
YAMON34v4Local  all  --  10.0.0.0/8           10.0.0.0/8          [goto] 
YAMON34v4Local  all  --  10.0.0.0/8           172.16.0.0/12       [goto] 
YAMON34v4Local  all  --  172.16.0.0/12        192.168.0.0/16      [goto] 
YAMON34v4Local  all  --  172.16.0.0/12        10.0.0.0/8          [goto] 
YAMON34v4Local  all  --  172.16.0.0/12        172.16.0.0/12       [goto] 
YAMON34v4  all  --  anywhere             anywhere            

Chain YAMON34v4Local (15 references)
target     prot opt source               destination         
RETURN     all  --  anywhere             anywhere            

Chain YAMON34v4_gp_Hardware (4 references)
target     prot opt source               destination         
RETURN     all  --  anywhere             anywhere            

Chain YAMON34v4_gp_Unknown (56 references)
target     prot opt source               destination         
RETURN     all  --  anywhere             anywhere            

Not terribly helpful, but see http://usage-monitoring.com/help/?t=unknown-mac for some insight.

For some reason that I cannot currently explain, some unattributed traffic occasionally sneaks through (perhaps a race condition between detecting a new IP address and actually getting it added to the chain?!?). Of course, I'm trying to track down what is causing that but in the meantime, this new functionality makes YAMon somewhat more accurate that it was before - e.g., on my main router, I'm usually seeing less that 5MB of data per day going to the No Matching MAC entry and some days, it is just a few KB, But, after adding this functionality, the percentage differences from the values recorded on the router (especially for uploads) are quite a bit smaller.

Jeff,

Thanks for that reference. I wish my traffic were anything close to as insignificant as 5MB or even 500MB. I'm currently mid month at a little over 100GB right now :flushed: