$ sudo iptables -L -n -v
Chain INPUT (policy ACCEPT 22873 packets, 5056K bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       udp  --  bat+   *       0.0.0.0/0            255.255.255.255      udp spt:68 dpt:67

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 2031 packets, 446K bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       udp  --  *      bat+    0.0.0.0/0            255.255.255.255      udp spt:67 dpt:68