+u8 *
+format_ip_address_family (u8 * s, va_list * args)
+{
+ ip_address_family_t af = va_arg (*args, ip_address_family_t);
+
+ switch (af)
+ {
+ case AF_IP4:
+ return (format (s, "ip4"));
+ case AF_IP6:
+ return (format (s, "ip6"));
+ }
+
+ return (format (s, "unknown"));
+}
+
+u8 *
+format_ip_dscp (u8 * s, va_list * va)
+{
+ ip_dscp_t dscp = va_arg (*va, u32); // int promotion of u8
+
+ switch (dscp)
+ {
+#define _(n,v) \
+ case IP_DSCP_##v: \
+ return (format (s, "%s", #v));
+ foreach_ip_dscp
+#undef _
+ }
+
+ return (format (s, "unknon"));
+}
+