From 13f472077d52c147057a198e552ea8cd6791631a Mon Sep 17 00:00:00 2001
From: Jared Pyzynski <jhambersob@gmail.com>
Date: Fri, 29 Jan 2021 07:27:11 -0800
Subject: [PATCH] Fix "ERROR: [udp] remote_recv_bind: Address already in use"
 when multiple `reuse_port`-enabled `ss-redir` instances are listening on the
 same address

---
 src/udprelay.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/udprelay.c b/src/udprelay.c
index 34c333bf..e9d7db04 100644
--- a/src/udprelay.c
+++ b/src/udprelay.c
@@ -869,6 +869,11 @@ remote_recv_cb(EV_P_ ev_io *w, int revents)
         close(src_fd);
         goto CLEAN_UP;
     }
+    if (reuse_port) {
+        if (set_reuseport(src_fd) != 0) {
+            ERROR("[udp] remote_recv port_reuse");
+        }
+    }
 #ifdef IP_TOS
     // Set QoS flag
     int tos   = 46 << 2;