import UBI dnsmasq-2.79-31.el8
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eabdullin
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70671aa970
commit
839fc82576
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@ -0,0 +1,106 @@
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From 4cab3d930f9236408b838adfdaaeb6508a928bbf Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
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Date: Fri, 9 Jun 2023 22:11:01 +0200
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Subject: [PATCH] Use serv_domain only for regular servers
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Do not try to use it for --local=/x/ or --address=/x/#. Some users use
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quite long list of blocks, which slows down walking trough domain list
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considerably. But searching by server_domain_find_domain is needed only
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for normal servers, which may store there last used server and number
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of recent forwarded queries. Local addresses overrides store there no
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useful information, avoid searching and adding new domains for such
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records.
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Would also speed up searching servers when blocklists are used, because
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only domains of servers are tested.
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Resolves: rhbz#2209031
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---
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src/forward.c | 4 ++--
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src/option.c | 13 ++++++++-----
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2 files changed, 10 insertions(+), 7 deletions(-)
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diff --git a/src/forward.c b/src/forward.c
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index d8e845a..989fb61 100644
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--- a/src/forward.c
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+++ b/src/forward.c
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@@ -234,8 +234,8 @@ static unsigned int search_servers(time_t now, struct all_addr **addrpp, unsigne
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*type = 0; /* use normal servers for this domain */
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*domain = NULL;
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}
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- if (serv_domain && !*serv_domain)
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- *serv_domain = server_domain_find_domain(*domain);
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+ if (serv_domain && !*serv_domain && (*type & SERV_HAS_DOMAIN)==0)
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+ *serv_domain = server_domain_find_domain(NULL);
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return flags;
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}
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diff --git a/src/option.c b/src/option.c
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index 1382c55..b22fc90 100644
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--- a/src/option.c
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+++ b/src/option.c
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@@ -906,7 +906,7 @@ static struct server *add_rev4(struct in_addr addr, int msize)
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p += sprintf(p, "in-addr.arpa");
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serv->flags = SERV_HAS_DOMAIN;
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- server_domain_new(serv);
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+ serv->serv_domain = NULL;
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serv->next = daemon->servers;
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daemon->servers = serv;
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@@ -931,7 +931,7 @@ static struct server *add_rev6(struct in6_addr *addr, int msize)
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p += sprintf(p, "ip6.arpa");
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serv->flags = SERV_HAS_DOMAIN;
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- server_domain_new(serv);
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+ serv->serv_domain = NULL;
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serv->next = daemon->servers;
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daemon->servers = serv;
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@@ -2246,7 +2246,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
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memset(serv, 0, sizeof(struct server));
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serv->domain = d;
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serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
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- server_domain_new(serv);
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+ serv->serv_domain = NULL;
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serv->next = daemon->servers;
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daemon->servers = serv;
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}
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@@ -2291,7 +2291,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
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memset(serv, 0, sizeof(struct server));
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serv->domain = d;
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serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
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- server_domain_new(serv);
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+ serv->serv_domain = NULL;
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serv->next = daemon->servers;
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daemon->servers = serv;
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}
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@@ -2542,7 +2542,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
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newlist = serv;
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serv->domain = domain;
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serv->flags = domain ? SERV_HAS_DOMAIN : SERV_FOR_NODOTS;
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- server_domain_new(serv);
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+ serv->serv_domain = NULL;
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arg = end;
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if (rebind)
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break;
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@@ -2594,6 +2594,8 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
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server_list_free(newlist);
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ret_err(err);
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}
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+ if ((newlist->flags & SERV_LITERAL_ADDRESS)==0)
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+ server_domain_new(newlist);
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}
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serv = newlist;
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@@ -2637,6 +2639,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
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else
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ret_err(gen_err);
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+ server_domain_new(serv);
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string = parse_server(comma, &serv->addr, &serv->source_addr, serv->interface, &serv->flags);
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if (string)
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--
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2.41.0
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@ -0,0 +1,64 @@
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From e342e4d5c3093d8dd9e2d622e46d36f67bfb4925 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
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Date: Mon, 10 Jan 2022 12:34:42 +0100
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Subject: [PATCH] Add root group writeable flag to log file
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Some systems strips even root process capability of writing to different
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users file. That include systemd under Fedora. When
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log-facility=/var/log/dnsmasq.log is used, log file with mode 0640
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is created. But restart then fails, because such log file can be used
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only when created new. Existing file cannot be opened by root when
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starting, causing fatal error. Avoid that by adding root group writeable flag.
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Ensure group is always root when granting write access. If it is
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anything else, administrator has to configure correct rights.
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(cherry picked from commit 1f8f78a49b8fd6b2862a3882053b1c6e6e111e5c)
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---
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src/log.c | 23 ++++++++++++++++++-----
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1 file changed, 18 insertions(+), 5 deletions(-)
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diff --git a/src/log.c b/src/log.c
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index 1ec3447..bcd6e52 100644
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--- a/src/log.c
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+++ b/src/log.c
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@@ -100,10 +100,23 @@ int log_start(struct passwd *ent_pw, int errfd)
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/* If we're running as root and going to change uid later,
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change the ownership here so that the file is always owned by
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the dnsmasq user. Then logrotate can just copy the owner.
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- Failure of the chown call is OK, (for instance when started as non-root) */
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- if (log_to_file && !log_stderr && ent_pw && ent_pw->pw_uid != 0 &&
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- fchown(log_fd, ent_pw->pw_uid, -1) != 0)
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- ret = errno;
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+ Failure of the chown call is OK, (for instance when started as non-root).
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+
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+ If we've created a file with group-id root, we also make
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+ the file group-writable. This gives processes in the root group
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+ write access to the file and avoids the problem that on some systems,
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+ once the file is owned by the dnsmasq user, it can't be written
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+ whilst dnsmasq is running as root during startup.
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+ */
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+ if (log_to_file && !log_stderr && ent_pw && ent_pw->pw_uid != 0)
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+ {
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+ struct stat ls;
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+ if (getgid() == 0 && fstat(log_fd, &ls) == 0 && ls.st_gid == 0 &&
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+ (ls.st_mode & S_IWGRP) == 0)
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+ (void)fchmod(log_fd, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
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+ if (fchown(log_fd, ent_pw->pw_uid, -1) != 0)
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+ ret = errno;
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+ }
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return ret;
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}
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@@ -118,7 +131,7 @@ int log_reopen(char *log_file)
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/* NOTE: umask is set to 022 by the time this gets called */
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if (log_file)
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- log_fd = open(log_file, O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR|S_IRGRP);
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+ log_fd = open(log_file, O_WRONLY|O_CREAT|O_APPEND, S_IRUSR|S_IWUSR|S_IRGRP);
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else
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{
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#if defined(HAVE_SOLARIS_NETWORK) || defined(__ANDROID__)
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--
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2.40.1
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@ -0,0 +1,45 @@
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From 9d8270be2e2b31437684f2d87add9a28a41f0c75 Mon Sep 17 00:00:00 2001
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From: Simon Kelley <simon@thekelleys.org.uk>
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Date: Tue, 7 Mar 2023 22:07:46 +0000
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Subject: [PATCH] Set the default maximum DNS UDP packet size to 1232.
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http://www.dnsflagday.net/2020/ refers.
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Thanks to Xiang Li for the prompt.
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(cherry picked from commit eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5)
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---
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man/dnsmasq.8 | 3 ++-
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src/config.h | 2 +-
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2 files changed, 3 insertions(+), 2 deletions(-)
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diff --git a/man/dnsmasq.8 b/man/dnsmasq.8
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index fce580f..4b0b180 100644
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--- a/man/dnsmasq.8
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+++ b/man/dnsmasq.8
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@@ -171,7 +171,8 @@ to zero completely disables DNS function, leaving only DHCP and/or TFTP.
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.TP
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.B \-P, --edns-packet-max=<size>
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Specify the largest EDNS.0 UDP packet which is supported by the DNS
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-forwarder. Defaults to 4096, which is the RFC5625-recommended size.
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+forwarder. Defaults to 1232, which is the recommended size following the
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+DNS flag day in 2020. Only increase if you know what you are doing.
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.TP
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.B \-Q, --query-port=<query_port>
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Send outbound DNS queries from, and listen for their replies on, the
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diff --git a/src/config.h b/src/config.h
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index 8c41943..62b7fa1 100644
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--- a/src/config.h
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+++ b/src/config.h
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@@ -19,7 +19,7 @@
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#define CHILD_LIFETIME 150 /* secs 'till terminated (RFC1035 suggests > 120s) */
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#define TCP_MAX_QUERIES 100 /* Maximum number of queries per incoming TCP connection */
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#define TCP_BACKLOG 32 /* kernel backlog limit for TCP connections */
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-#define EDNS_PKTSZ 4096 /* default max EDNS.0 UDP packet from RFC5625 */
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+#define EDNS_PKTSZ 1232 /* default max EDNS.0 UDP packet from from /dnsflagday.net/2020 */
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#define SAFE_PKTSZ 1280 /* "go anywhere" UDP packet size */
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#define KEYBLOCK_LEN 40 /* choose to minimise fragmentation when storing DNSSEC keys */
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#define DNSSEC_WORK 50 /* Max number of queries to validate one question */
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--
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2.39.2
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@ -13,7 +13,7 @@
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Name: dnsmasq
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Version: 2.79
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Release: 26%{?extraversion:.%{extraversion}}%{?dist}.1
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Release: 31%{?extraversion:.%{extraversion}}%{?dist}
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Summary: A lightweight DHCP/caching DNS server
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License: GPLv2 or GPLv3
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@ -83,12 +83,19 @@ Patch37: dnsmasq-2.81-linux-SIOCGSTAMP.patch
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Patch38: dnsmasq-2.79-server-domain-fixup.patch
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# https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;h=f8c77edbdffb8ada7753ea9fa104f0f6da70cfe3
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Patch39: dnsmasq-2.81-dhcpv6-relay-link-address.patch
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# https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;h=eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5
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Patch40: dnsmasq-2.89-edns0-size.patch
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# Downstream only patch; https://bugzilla.redhat.com/show_bug.cgi?id=2186481
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# Fixes issue in Patch4
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Patch41: dnsmasq-2.85-serv_domain-rh2186481.patch
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# Downstream only patch; https://bugzilla.redhat.com/show_bug.cgi?id=2186481
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# complements patch10
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Patch42: dnsmasq-2.85-serv_domain-rh2186481-2.patch
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# http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=1f8f78a49b8fd6b2862a3882053b1c6e6e111e5c
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Patch43: dnsmasq-2.87-log-root-writeable.patch
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# Downstream only patch; https://bugzilla.redhat.com/show_bug.cgi?id=2209031
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# complements patch42
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Patch44: dnsmasq-2.85-domain-blocklist-speedup.patch
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# This is workaround to nettle bug #1549190
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# https://bugzilla.redhat.com/show_bug.cgi?id=1549190
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@ -161,8 +168,11 @@ server's leases.
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%patch37 -p1 -b .SIOCGSTAMP
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%patch38 -p1 -b .rh2120357
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%patch39 -p1 -b .rh2169355
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%patch40 -p1 -b .CVE-2023-28450
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%patch41 -p1 -b .rh2186481
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%patch42 -p1 -b .rh2186481-2
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%patch43 -p1 -b .rh2156789
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%patch44 -p1 -b .rh2209031
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# use /var/lib/dnsmasq instead of /var/lib/misc
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for file in dnsmasq.conf.example man/dnsmasq.8 man/es/dnsmasq.8 src/config.h; do
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@ -262,10 +272,21 @@ install -Dpm 644 %{SOURCE2} %{buildroot}%{_sysusersdir}/dnsmasq.conf
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%{_mandir}/man1/dhcp_*
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%changelog
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* Fri Apr 21 2023 Petr Menšík <pemensik@redhat.com> - 2.79-26.1
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- Correct possible crashes when server=/example.net/# is used (#2186481)
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* Wed Jun 14 2023 Petr Menšík <pemensik@redhat.com> - 2.79-31
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- Do not create and search --local and --address=/x/# domains (#2233542)
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* Wed Jun 14 2023 Petr Menšík <pemensik@redhat.com> - 2.79-30
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- Make create logfile writeable by root (#2156789)
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* Wed May 10 2023 Petr Menšík <pemensik@redhat.com> - 2.79-29
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- Fix also dynamically set resolvers over dbus (#2186481)
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* Fri Apr 21 2023 Petr Menšík <pemensik@redhat.com> - 2.79-28
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- Correct possible crashes when server=/example.net/# is used (#2186481)
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* Mon Apr 03 2023 Petr Menšík <pemensik@redhat.com> - 2.79-27
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- Limit offered EDNS0 size to 1232 (CVE-2023-28450)
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* Wed Feb 15 2023 Petr Menšík <pemensik@redhat.com> - 2.79-26
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- Avoid DHCPv6 relayed replies with Client Link-Layer Address (#2169355)
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