ifconfig <interface_name> stats ??? Wrong behavior OR BUG ?

From	Kanto Andria <avrkca@yahoo.ca>
Newsgroups	linux.debian.user
Subject	ifconfig <interface_name> stats ??? Wrong behavior OR BUG ?
Date	2021-06-11 16:10 +0200
Message-ID	<CoQ1b-2a1-1@gated-at.bofh.it> (permalink)
References	<CoQ1b-2a1-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hello,
First post here on this lists. I know about the the IP set of  commands, BUT my concern is about the ifconfig one.I have 2 Debian 10 Buster systems and I have the same behavior - reading the man page did not give the specific options 

      dada@Jradebian:~$ sudo ifconfig enp0s31f6                                                                                                                                    
[sudo] password for dada:                                                                                                                                                    
enp0s31f6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500                                                                                                              
        inet 192..168.0.187  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::9afa:9bff:fed8:9776  prefixlen 64  scopeid 0x20<link>
        ether 98:fa:9b:d8:97:76  txqueuelen 1000  (Ethernet)
        RX packets 128087  bytes 129259424 (123.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 60117  bytes 11913581 (11..3 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  memory 0xec200000-ec220000        
 Not sure here but the command sudo ifconfig <interface_name> STATS seems to reset the IP address 

                                                                        
dada@Jradebian:~$                                           
dada@Jradebian:~$                                     
dada@Jradebian:~$                                  
dada@Jradebian:~$ sudo ifconfig enp0s31f6 stats    
dada@Jradebian:~$                                                 
dada@Jradebian:~$                                      
dada@Jradebian:~$ sudo ifconfig enp0s31f6
enp0s31f6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 54.36..162.17  netmask 255.0.0.0  broadcast 54.255.255.255
        inet6 fe80::9afa:9bff:fed8:9776  prefixlen 64  scopeid 0x20<link>
        ether 98:fa:9b:d8:97:76  txqueuelen 1000  (Ethernet)   
        RX packets 128151  bytes 129273250 (123.2 MiB)                   
        RX errors 0  dropped 0  overruns 0  frame 0         
        TX packets 60132  bytes 11918134 (11.3 MiB)   
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  memory 0xec200000-ec220000
                                                             
I have experienced the same issue on a FreeBSD based product close to the 10.x release 

So the main question: Why the stats did not generate error like no such options ? Why the IP is reset to a public IP here belonging to OVH?
Best regards
Kanto

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ifconfig <interface_name> stats ??? Wrong behavior OR BUG ? Kanto Andria <avrkca@yahoo.ca> - 2021-06-11 16:10 +0200
  Re: ifconfig <interface_name> stats ??? Wrong behavior OR BUG ? Reco <recoverym4n@enotuniq.net> - 2021-06-11 16:20 +0200
  Re: ifconfig <interface_name> stats ??? Wrong behavior OR BUG ? Andy Smith <andy@strugglers.net> - 2021-06-11 16:30 +0200
  Re: ifconfig <interface_name> stats ??? Wrong behavior OR BUG ? David Wright <deblis@lionunicorn.co.uk> - 2021-06-22 18:00 +0200

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