From: Roy Marples <roy@marples.name>
Date: Fri, 21 Feb 2025 22:48:42 +0000 (+0000)
Subject: DHCP6: Fix dhcpcd vendor class option
X-Git-Tag: v10.2.2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d224188b23eb6c3bc3532c7ad69a2020471c6c6;p=thirdparty%2Fdhcpcd.git

DHCP6: Fix dhcpcd vendor class option
---

diff --git a/src/dhcp6.c b/src/dhcp6.c
index fde8d368..534cb243 100644
--- a/src/dhcp6.c
+++ b/src/dhcp6.c
@@ -331,8 +331,9 @@ dhcp6_makevendor(void *data, const struct interface *ifp)
 				p += vivco->len;
 			}
 		} else if (ifo->vendorclassid[0] != '\0') {
+			optlen = sizeof(uint32_t) + sizeof(uint16_t) + vlen;
 			o.code = htons(D6_OPTION_VENDOR_CLASS);
-			o.len = htons((uint16_t)len);
+			o.len = htons((uint16_t)optlen);
 			memcpy(p, &o, sizeof(o));
 			p += sizeof(o);
 			pen = htonl(DHCPCD_IANA_PEN);