dns: treat names rejected by res_mkquery as nonexistent rather than error

[musl] / src / network / lookup_name.c

diff --git a/src/network/lookup_name.c b/src/network/lookup_name.c
index 0462484..bec6ba2 100644 (file)
--- a/src/network/lookup_name.c
+++ b/src/network/lookup_name.c
@@ -80,7 +80,7 @@ static int name_from_hosts(struct address buf[static MAXADDRS], char canon[stati
                        continue;
                default:
                        badfam = EAI_NONAME;
-                       continue;
+                       break;
                }
 
                if (have_canon) continue;
@@ -153,8 +153,11 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static
                        qlens[nq] = __res_mkquery(0, name, 1, afrr[i].rr,
                                0, 0, 0, qbuf[nq], sizeof *qbuf);
                        if (qlens[nq] == -1)
-                               return EAI_NONAME;
+                               return 0;
                        qbuf[nq][3] = 0; /* don't need AD flag */
+                       /* Ensure query IDs are distinct. */
+                       if (nq && qbuf[nq][0] == qbuf[0][0])
+                               qbuf[nq][0]++;
                        nq++;
                }
        }