diff --git a/route/address.go b/route/address.go
index d0e9f415f..279505b10 100644
--- a/route/address.go
+++ b/route/address.go
@@ -178,13 +178,13 @@ func parseInetAddr(af int, b []byte) (Addr, error) {
 	)
 	switch af {
 	case syscall.AF_INET:
-		if len(b) < (off4+1) || len(b) < int(b[0]) {
+		if len(b) < int(b[0]) {
 			return nil, errInvalidAddr
 		}
 		sockAddrLen := int(b[0])
 		a := &Inet4Addr{}
 		// sockAddrLen of 0 is valid and represents 0.0.0.0
-		if sockAddrLen != 0 {
+		if sockAddrLen > off4 {
 			// Calculate how many bytes of the address to copy:
 			// either full IPv4 length or the available length.
 			n := off4 + ipv4Len
@@ -195,13 +195,13 @@ func parseInetAddr(af int, b []byte) (Addr, error) {
 		}
 		return a, nil
 	case syscall.AF_INET6:
-		if len(b) < (off6+1) || len(b) < int(b[0]) {
+		if len(b) < int(b[0]) {
 			return nil, errInvalidAddr
 		}
 		sockAddrLen := int(b[0])
 		a := &Inet6Addr{}
 		// sockAddrLen of 0 is valid and represents ::
-		if sockAddrLen != 0 {
+		if sockAddrLen > off6 {
 			n := off6 + ipv6Len
 			if sockAddrLen < n {
 				n = sockAddrLen
diff --git a/route/address_darwin_test.go b/route/address_darwin_test.go
index 55accff9d..80f686e97 100644
--- a/route/address_darwin_test.go
+++ b/route/address_darwin_test.go
@@ -96,6 +96,38 @@ var parseAddrsOnDarwinLittleEndianTests = []parseAddrsOnDarwinTest{
 			nil,
 		},
 	},
+	// sudo route -n add -inet6 -ifscope en11 -net :: -netmask :: fe80::2d0:4cff:fe10:15d2
+	// RTM_ADD: Add Route: len 152, pid: 81198, seq 1, errno 0, ifscope 13, flags:<UP,GATEWAY,DONE,STATIC,IFSCOPE>
+	// locks:  inits:
+	// sockaddrs: <DST,GATEWAY,NETMASK>
+	// :: fe80::2d0:4cff:fe10:15d2 ::
+	{
+		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,
+		parseKernelInetAddr,
+		[]byte{
+			0x1c, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00,
+
+			0x1c, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x02, 0xd0, 0x4c, 0xff, 0xfe, 0x10, 0x15, 0xd2,
+			0x00, 0x00, 0x00, 0x00,
+
+			0x02, 0x1e, 0x00, 0x00,
+		},
+		[]Addr{
+			&Inet6Addr{},
+			&Inet6Addr{IP: [16]byte{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xd0, 0x4c, 0xff, 0xfe, 0x10, 0x15, 0xd2}},
+			&Inet6Addr{},
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+		},
+	},
 	// golang/go#70528, the kernel can produce addresses of length 0
 	{
 		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,