dnsmasq: Update to version 2.85

Fixes issue with merged DNS requests in 2.83/2.84 not being
retried on the firsts failed request causing lookup failures.

Also fixes the following security problem in dnsmasq:
* CVE-2021-3448:
  If specifiying the source address or interface to be used
  when contacting upstream name servers such as:
  server=8.8.8.8@1.2.3.4, server=8.8.8.8@1.2.3.4#66 and
  server=8.8.8.8@eth0 then all would use the same socket
  bound to the explicitly configured port. Now only
  server=8.8.8.8@1.2.3.4#66 will use the explicitly
  configured port and the others random source ports.

Remove upstreamed patches and update remaining patch.

Signed-off-by: Alan Swanson <reiver@improbability.net>
[refreshed old runtime support patch]
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

1 files changed, 4 insertions, 17 deletions

diff --git a/package/network/services/dnsmasq/patches/100-remove-old-runtime-kernel-support.patch b/package/network/services/dnsmasq/patches/100-remove-old-runtime-kernel-support.patch
index bd11806ae0..b601bce1a9 100644
--- a/package/network/services/dnsmasq/patches/100-remove-old-runtime-kernel-support.patch
+++ b/package/network/services/dnsmasq/patches/100-remove-old-runtime-kernel-support.patch
@@ -1,4 +1,4 @@
-From 7df4c681678612d196b4e1eec24963d181fdb28a Mon Sep 17 00:00:00 2001
+From 02fbe60e1c7e74d2ba57109575e7bfc238b1b5d4 Mon Sep 17 00:00:00 2001
 From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
 Date: Sun, 5 Apr 2020 17:18:23 +0100
 Subject: [PATCH] drop runtime old kernel support
@@ -8,9 +8,8 @@ Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
  src/dnsmasq.c |  4 ----
  src/dnsmasq.h |  5 +---
  src/ipset.c   | 64 ++++-----------------------------------------------
- src/netlink.c |  3 +--
  src/util.c    | 19 ---------------
- 5 files changed, 6 insertions(+), 89 deletions(-)
+ 4 files changed, 5 insertions(+), 87 deletions(-)
 
 --- a/src/dnsmasq.c
 +++ b/src/dnsmasq.c
@@ -27,7 +26,7 @@ Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
  
 --- a/src/dnsmasq.h
 +++ b/src/dnsmasq.h
-@@ -1125,7 +1125,7 @@ extern struct daemon {
+@@ -1144,7 +1144,7 @@ extern struct daemon {
    int inotifyfd;
  #endif
  #if defined(HAVE_LINUX_NETWORK)
@@ -36,7 +35,7 @@ Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
  #elif defined(HAVE_BSD_NETWORK)
    int dhcp_raw_fd, dhcp_icmp_fd, routefd;
  #endif
-@@ -1306,9 +1306,6 @@ int read_write(int fd, unsigned char *pa
+@@ -1326,9 +1326,6 @@ int read_write(int fd, unsigned char *pa
  void close_fds(long max_fd, int spare1, int spare2, int spare3);
  int wildcard_match(const char* wildcard, const char* match);
  int wildcard_matchn(const char* wildcard, const char* match, int num);
@@ -139,18 +138,6 @@ Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
  
    if (ret == -1)
       my_syslog(LOG_ERR, _("failed to update ipset %s: %s"), setname, strerror(errno));
---- a/src/netlink.c
-+++ b/src/netlink.c
-@@ -92,8 +92,7 @@ char *netlink_init(void)
-   iov.iov_len = 100;
-   iov.iov_base = safe_malloc(iov.iov_len);
-   
--  if (daemon->kernel_version >= KERNEL_VERSION(2,6,30) &&
--      setsockopt(daemon->netlinkfd, SOL_NETLINK, NETLINK_NO_ENOBUFS, &opt, sizeof(opt)) == -1)
-+  if (setsockopt(daemon->netlinkfd, SOL_NETLINK, NETLINK_NO_ENOBUFS, &opt, sizeof(opt)) == -1)
-     return _("warning: failed to set NETLINK_NO_ENOBUFS on netlink socket");
-   
-   return NULL;
 --- a/src/util.c
 +++ b/src/util.c
 @@ -786,22 +786,3 @@ int wildcard_matchn(const char* wildcard