Merge branch 'macos-fix-pq-timeout'

1 files changed, 4 insertions, 10 deletions

diff --git a/talpid-core/src/firewall/macos.rs b/talpid-core/src/firewall/macos.rs
index fafc5dcddb..d8bf5a5136 100644
--- a/talpid-core/src/firewall/macos.rs
+++ b/talpid-core/src/firewall/macos.rs
@@ -1,7 +1,5 @@
 use std::env;
 use std::io;
-use std::net::Ipv6Addr;
-use std::net::SocketAddr;
 use std::net::{IpAddr, Ipv4Addr};
 use std::ptr;
 use std::sync::LazyLock;
@@ -146,14 +144,10 @@ impl Firewall {
         }
 
         // Socket addresses for Multicast DNS.
-        let mdns_port = 5353;
-        let mdns_addrs = [
-            SocketAddr::from((Ipv4Addr::new(224, 0, 0, 251), mdns_port)),
-            SocketAddr::from((Ipv6Addr::new(0xff02, 0, 0, 0, 0, 0, 0, 0xfb), mdns_port)),
-        ];
-
-        if mdns_addrs.contains(&remote_address) {
-            // Ignore MDNS states. PQ *seems* to timeout if these states are flushed.
+        const MDNS_PORT: u16 = 5353;
+        if remote_address.port() == MDNS_PORT {
+            // Blocking mDNS sometimes causes the tunnel to fail. Seemingly by interferring with
+            // configd, mDNSResponder, or another macOS service.
             return Ok(false);
         }