This is handy for debugging interop problems, so we can see exactly what
named is sending without fiddling with tcpdump.

I have set the message's debug level to 11 so a debug level of 10
continues to produce only incoming packets in the log. Nothing else
is at level 11.

---
 lib/dns/resolver.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index 96cd534..8ef2c5b 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -2228,6 +2228,16 @@ resquery_send(resquery_t *query) {
 	}
 
 	/*
+	 * Log the outgoing packet.
+	 */
+	dns_message_logfmtpacket(fctx->qmessage, "sending packet:\n",
+				 DNS_LOGCATEGORY_RESOLVER,
+				 DNS_LOGMODULE_PACKETS,
+				 &dns_master_style_comment,
+				 ISC_LOG_DEBUG(11),
+				 fctx->res->mctx);
+
+	/*
 	 * We're now done with the query message.
 	 */
 	dns_message_reset(fctx->qmessage, DNS_MESSAGE_INTENTRENDER);
-- 
2.0.1