Index: proto/bgp/attrs.c
===================================================================
--- proto/bgp/attrs.c	(revision 5017)
+++ proto/bgp/attrs.c	(working copy)
@@ -1518,18 +1518,19 @@ err:
 int
 bgp_get_attr(eattr *a, byte *buf, int buflen)
 {
-  unsigned int i = EA_ID(a->id);
+  unsigned int len, i = EA_ID(a->id);
   struct attr_desc *d;
 
   if (ATTR_KNOWN(i))
     {
       d = &bgp_attr_table[i];
-      buf += bsprintf(buf, "%s", d->name);
-      if (d->format)
+      len = bsprintf(buf, "%s", d->name);
+      buf += len;
+      if (d->format && (len > 2))
 	{
 	  *buf++ = ':';
 	  *buf++ = ' ';
-	  d->format(a, buf, buflen);
+	  d->format(a, buf, buflen - len - 2);
 	  return GA_FULL;
 	}
       return GA_NAME;