From: Sergey Bugaev <bugaevc@gmail.com>
Date: Mon, 15 Feb 2021 16:03:27 +0000 (+0300)
Subject: resolved: don't discard mDNS packets with ip6.arpa RRs
X-Git-Tag: v248-rc3~122
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7675501540980eff80c0e055c219e5e1efde6b62;p=thirdparty%2Fsystemd.git

resolved: don't discard mDNS packets with ip6.arpa RRs

ip6.arpa is also a valid domain name to put in mDNS packets.
---

diff --git a/src/resolve/resolved-mdns.c b/src/resolve/resolved-mdns.c
index cf310ea01eb..15843e90b9f 100644
--- a/src/resolve/resolved-mdns.c
+++ b/src/resolve/resolved-mdns.c
@@ -289,9 +289,11 @@ static int on_mdns_packet(sd_event_source *s, int fd, uint32_t revents, void *us
                         const char *name = dns_resource_key_name(rr->key);
                         DnsTransaction *t;
 
-                        /* If the received reply packet contains ANY record that is not .local or .in-addr.arpa,
-                         * we assume someone's playing tricks on us and discard the packet completely. */
+                        /* If the received reply packet contains ANY record that is not .local
+                         * or .in-addr.arpa or .ip6.arpa, we assume someone's playing tricks on
+                         * us and discard the packet completely. */
                         if (!(dns_name_endswith(name, "in-addr.arpa") > 0 ||
+                              dns_name_endswith(name, "ip6.arpa") > 0 ||
                               dns_name_endswith(name, "local") > 0))
                                 return 0;