diff --git a/shadowsocks-libev/files/shadowsocks.conf b/shadowsocks-libev/files/shadowsocks.conf
index c9aedd2de0..f02474433d 100644
--- a/shadowsocks-libev/files/shadowsocks.conf
+++ b/shadowsocks-libev/files/shadowsocks.conf
@@ -52,6 +52,9 @@ net.ipv4.tcp_mtu_probing = 0
 # Default conntrack is too small
 net.netfilter.nf_conntrack_max = 131072
 
+net.ipv4.conf.all.ignore_routes_with_linkdown = 1
+net.ipv4.conf.default.ignore_routes_with_linkdown = 1
+
 net.ipv4.tcp_ecn = 2
 #net.ipv4.tcp_sack = 0
 #net.ipv4.tcp_dsack = 0