If you expect that IP address might change you could go the extra mile and do something like

docker container run -e "DOCKER_HOST=$(ip -4 addr show docker0 | grep -Po 'inet \K[\d.]+')"

..., this way every time you run your container, it’ll have the IP address available inside the container set to the DOCKER_HOST environment variable.

trouver l'adresse ip des client deu tethering android

cat /proc/net/arp

des sous-domaines locaux avec l'adresse ip

trouver l'adresse ip d'une machine avec l'adresse MAC :

tcpdump -e -i eth1 | grep adressse mac
11:46:40.276938 b8:27:eb:50:b7:8d (oui Unknown) > Broadcast, ethertype ARP (0x0806), length 60: Request who-has www.routerlogin.com tell 192.168.0.8, length 46