From 972d101f6efacfe7f96c4b5f69d7f793719400ad Mon Sep 17 00:00:00 2001
From: "mergify[bot]" <37929162+mergify[bot]@users.noreply.github.com>
Date: Tue, 5 Oct 2021 01:13:31 +0000
Subject: [PATCH] Default --rpc-bind-address to 127.0.0.1 when --private-rpc is
 provided and --bind-address is not (#20427)

(cherry picked from commit 221343e849dfb2fafcabf3b896c3979e0ed15cea)

Co-authored-by: Michael Vines <mvines@gmail.com>
---
 validator/src/main.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/validator/src/main.rs b/validator/src/main.rs
index ae2768f695..0df47c5209 100644
--- a/validator/src/main.rs
+++ b/validator/src/main.rs
@@ -1524,7 +1524,7 @@ pub fn main() {
                 .value_name("HOST")
                 .takes_value(true)
                 .validator(solana_net_utils::is_host)
-                .help("IP address to bind the RPC port [default: use --bind-address]"),
+                .help("IP address to bind the RPC port [default: 127.0.0.1 if --private-rpc is present, otherwise use --bind-address]"),
         )
         .arg(
             Arg::with_name("rpc_threads")
@@ -2084,6 +2084,8 @@ pub fn main() {
     let rpc_bind_address = if matches.is_present("rpc_bind_address") {
         solana_net_utils::parse_host(matches.value_of("rpc_bind_address").unwrap())
             .expect("invalid rpc_bind_address")
+    } else if private_rpc {
+        solana_net_utils::parse_host("127.0.0.1").unwrap()
     } else {
         bind_address
     };