Debug Commands

Networking

tcpdump – debug DHCP

tcpdump -i <interface> -vvv -s 0 port bootps

dnsmasq – run in front-end and show DHCP log

dnsmasq -u nobody --dhcp-authoritative -P 4096 -C /var/dnsmasq.conf -d --log-dhcp

dhclient – show detail

dhclient -v <interface>