I'm trying to configure two dhcp sites on different interfaces. part of first site: listen { ipaddr = * port = 67 type = dhcp interface = eth1.940 } second: listen { ipaddr = * port = 67 type = dhcp interface = eth0 } ERROR: Failed to open socket: cannot bind socket: Address already in use /usr/local/freeradius205pre/etc/raddb/sites-enabled/dhcp-iptv[90]: Error binding to port for 0.0.0.0 port 67 Ok, i'm trying to specify exactly ip addresses of interfaces - but nothing works - because dhcp requests came with 255.255.255.255 destination address - and freeradius does not recieve this packets. -- With best regards, Evgeniy Kozhuhovskiy, Leader of Services team, Minsk State Phony Network, RUE Beltelecom.