src/patches/dnsmasq/0090-Tweak-EDNS-timeout-code.patch

   1 From 86fa1046920dedc8134136a6244ca96e8a37e9d8 Mon Sep 17 00:00:00 2001
   2 From: Simon Kelley <simon@thekelleys.org.uk>
   3 Date: Sun, 10 May 2015 13:50:59 +0100
   4 Subject: [PATCH] Tweak EDNS timeout code.
   5
   6 ---
   7  src/forward.c |    6 ++++--
   8  1 file changed, 4 insertions(+), 2 deletions(-)
   9
  10 diff --git a/src/forward.c b/src/forward.c
  11 index 592243f..74e5ab6 100644
  12 --- a/src/forward.c
  13 +++ b/src/forward.c
  14 @@ -799,8 +799,10 @@ void reply_query(int fd, int family, time_t now)
  15      }
  16
  17    /* We tried resending to this server with a smaller maximum size and got an answer.
  18 -     Make that permanent. */
  19 -  if (server && (forward->flags & FREC_TEST_PKTSZ))
  20 +     Make that permanent. To avoid reduxing the packet size for an single dropped packet,
  21 +     only do this when we get a truncated answer, or one larger than the safe size. */
  22 +  if (server && (forward->flags & FREC_TEST_PKTSZ) &&
  23 +      ((header->hb3 & HB3_TC) || n >= SAFE_PKTSZ))
  24      server->edns_pktsz = SAFE_PKTSZ;
  25
  26    /* If the answer is an error, keep the forward record in place in case
  27 --
  28 1.7.10.4
  29