check for invalid protocol when dispatch fails

treat ISC_R_INVALIDPROTO as a networking error when it occurs.

diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index e472c6e78eadfc10312a97105ffb9d8d45d34b9e..2564f09de08c6e1b0ac86acb992b6ae5be72d3e5 100644 (file)
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -7791,6 +7791,7 @@ rctx_dispfail(respctx_t *rctx) {
        case ISC_R_NETUNREACH:
        case ISC_R_CONNREFUSED:
        case ISC_R_CONNECTIONRESET:
+       case ISC_R_INVALIDPROTO:
        case ISC_R_CANCELED:
        case ISC_R_SHUTTINGDOWN:
                rctx->broken_server = rctx->result;