From df43b8f228b705b0a97de31a271133b0cb1d5c48 Mon Sep 17 00:00:00 2001
From: Qiu Jian <qiujian@yunionyun.com>
Date: Sun, 24 Mar 2024 22:31:04 +0800
Subject: [PATCH] fix: fail to parse ipv6 address of
 fc00::1:1004:ffff:ffff:ffff:ffff

---
 util/netutils/ipv6.go      |  6 +++++-
 util/netutils/ipv6_test.go | 17 +++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/util/netutils/ipv6.go b/util/netutils/ipv6.go
index 4b390c7..1dbc067 100644
--- a/util/netutils/ipv6.go
+++ b/util/netutils/ipv6.go
@@ -155,8 +155,12 @@ func normalizeIpv6Addr(addrStr string) ([8]uint16, error) {
 		}
 	} else {
 		for i := 0; i < len(parts); i++ {
+			partStr := strings.TrimSpace(parts[i])
+			if len(partStr) == 0 {
+				continue
+			}
 			var err error
-			addr[i], err = hex2Number(strings.TrimSpace(parts[i]))
+			addr[i], err = hex2Number(partStr)
 			if err != nil {
 				return addr, errors.Wrapf(err, "hex2Number %s", addrStr)
 			}
diff --git a/util/netutils/ipv6_test.go b/util/netutils/ipv6_test.go
index 0e75e9b..55b79b0 100644
--- a/util/netutils/ipv6_test.go
+++ b/util/netutils/ipv6_test.go
@@ -253,6 +253,19 @@ func TestNewIPV6Addr(t *testing.T) {
 			netAddr:       "::1200:0:0:0",
 			broadcastAddr: "::12ff:ffff:ffff:ffff",
 		},
+		{
+			in: "fc00:0:1:1004::10",
+			wantAddr: IPV6Addr{
+				0xfc00, 0, 1, 0x1004, 0, 0, 0, 0x10,
+			},
+			want:     "fc00:0:1:1004::10",
+			stepUp:   "fc00:0:1:1004::11",
+			stepDown: "fc00:0:1:1004::f",
+
+			preflen:       64,
+			netAddr:       "fc00:0:1:1004::",
+			broadcastAddr: "fc00::1:1004:ffff:ffff:ffff:ffff",
+		},
 	}
 	for _, c := range cases {
 		addr6, err := NewIPV6Addr(c.in)
@@ -391,6 +404,10 @@ func TestRandomAddress(t *testing.T) {
 			addr1: "::1234:1",
 			addr2: "::1238:ffff",
 		},
+		{
+			addr1: "fc00:0:1:1004::10",
+			addr2: "fc00::1:1004:ffff:ffff:ffff:ffff",
+		},
 	}
 	for _, c := range cases {
 		addr1, err := NewIPV6Addr(c.addr1)