From 0662224c317896f4527095400fcfb7bbb988ea21 Mon Sep 17 00:00:00 2001
From: Daniel Liu <139250065@qq.com>
Date: Thu, 28 Aug 2025 18:58:05 +0800
Subject: [PATCH] ethclient: support networkID in hex format #30263 (#1392)
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Some chains’ network IDs use hexadecimal such as Optimism ("0xa" instead
of "10"), so when converting the string to big.Int, we cannot specify
base 10; otherwise, it will encounter errors with hexadecimal network
IDs.

Co-authored-by: Zhihao Lin <3955922+kkqy@users.noreply.github.com>
---
 ethclient/ethclient.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index c965eadbea..b3ef1322e4 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -365,7 +365,7 @@ func (ec *Client) NetworkID(ctx context.Context) (*big.Int, error) {
 	if err := ec.c.CallContext(ctx, &ver, "net_version"); err != nil {
 		return nil, err
 	}
-	if _, ok := version.SetString(ver, 10); !ok {
+	if _, ok := version.SetString(ver, 0); !ok {
 		return nil, fmt.Errorf("invalid net_version result %q", ver)
 	}
 	return version, nil