From dd51c4332f19f26d80e2129e1c27fb83a0389ac2 Mon Sep 17 00:00:00 2001 From: Yu Watanabe Date: Wed, 8 Nov 2023 21:37:04 +0900 Subject: [PATCH] resolve/mdns: silently ignore Known-Answers only packets --- src/resolve/resolved-mdns.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/resolve/resolved-mdns.c b/src/resolve/resolved-mdns.c index 11e3b141253..b63073af7fd 100644 --- a/src/resolve/resolved-mdns.c +++ b/src/resolve/resolved-mdns.c @@ -254,8 +254,9 @@ static int mdns_scope_process_query(DnsScope *s, DnsPacket *p) { if (r < 0) return log_debug_errno(r, "Failed to extract resource records from incoming packet: %m"); + /* TODO: Support Known-Answers only packets gracefully. */ if (dns_question_size(p->question) <= 0) - return log_debug_errno(SYNTHETIC_ERRNO(EBADMSG), "Received mDNS query without question, ignoring."); + return 0; unicast_reply = mdns_should_reply_using_unicast(p); if (unicast_reply && !sender_on_local_subnet(s, p)) { -- 2.47.3