diff -Nru --show-c-function iptraf-ng-1.0.2.orig/src/ifaces.c iptraf-ng-1.0.2/src/ifaces.c
--- iptraf-ng-1.0.2.orig/src/ifaces.c	2011-05-06 17:38:39.942696902 -0300
+++ iptraf-ng-1.0.2/src/ifaces.c	2011-05-06 17:40:46.349363569 -0300
@@ -33,7 +33,7 @@ details.
 #include "error.h"
 
 extern int accept_unsupported_interfaces;
-#define NUM_SUPPORTED_IFACES 39
+#define NUM_SUPPORTED_IFACES 40
 
 extern int daemonized;
 
@@ -41,7 +41,7 @@ char ifaces[][6] =
     { "lo", "eth", "sl", "ppp", "ippp", "plip", "fddi", "isdn", "dvb", "pvc",
       "hdlc", "ipsec", "sbni", "tr", "wvlan", "wlan", "sm2", "sm3", "pent", "lec",
       "brg", "tun", "tap", "cipcb", "tunl", "vlan", "hsi", "ctc", "ath", "bond",
-      "ra", "bnep", "dsl", "modem", "ni", "br", "tap", "dummy", "vmnet"
+      "ra", "bnep", "dsl", "modem", "ni", "br", "tap", "dummy", "vmnet", "usb"
 };
 
 char *ltrim(char *buf)
diff --show-c-function -Nru iptraf-ng-1.0.2.orig/src/packet.c iptraf-ng-1.0.2/src/packet.c
--- iptraf-ng-1.0.2.orig/src/packet.c	2010-04-17 23:07:10.775785541 -0300
+++ iptraf-ng-1.0.2/src/packet.c	2010-04-17 23:09:41.592511710 -0300
@@ -139,7 +139,9 @@ unsigned short getlinktype(unsigned shor
                 result = LINK_INVALID;
                 break;
             }
-        } else if (accept_unsupported_interfaces)
+        } else if (strncmp(ifname, "usb", 3) == 0)
+            result = LINK_ETHERNET;
+        else if (accept_unsupported_interfaces)
             result = LINK_ETHERNET;
         break;
     case ARPHRD_LOOPBACK:

Signed-off-by: Lamarque V. Souza <lamarque@gmail.com>