check dhcp client lease time

dhcp client is dhcpcd. to view lease information run

dhcpcd --dumplease <interface_name>

example

# dhcpcd --dumplease eth1
broadcast_address=192.168.1.255
dhcp_lease_time=604800
dhcp_message_type=5
dhcp_server_identifier=192.168.1.21
domain_name=1scom.net
domain_name_servers='4.2.2.2'
ip_address=192.168.1.1
network_number=192.168.1.0
routers=192.168.1.254
subnet_cidr=24
subnet_mask=255.255.255.0