improve Ethernet proto error message
diff --git a/ebtables.c b/ebtables.c
index 266ed8e..1e87fe3 100644
--- a/ebtables.c
+++ b/ebtables.c
@@ -470,6 +470,8 @@
#define print_if_l_error ebt_print_error("Interface name length must be less " \
"than %d", IFNAMSIZ)
+#define print_epoto_error(__proto) ebt_print_error("Problem with the specified"\
+ " Ethernet protocol (%s), perhaps "_PATH_ETHERTYPES " is missing", __proto);
#define OPT_COMMAND 0x01
#define OPT_TABLE 0x02
#define OPT_IN 0x04
@@ -964,8 +966,7 @@
}
ent = getethertypebyname(argv[optind - 1]);
if (!ent)
- ebt_print_error("Problem with the "
- "specified protocol");
+ print_epoto_error(argv[optind - 1]);
new_entry->ethproto = ent->e_ethertype;
}
if (new_entry->ethproto < 1536 &&