Fix alignment of buffers in ra_process and dhcpv6_request

[odhcp6c.git] / src / dhcpv6.c

diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index e27d8995a40102a5446816334fb3e3843819e311..8a1231df1245adc1e057b5589818b93be9a9e99b 100644 (file)
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -577,7 +577,9 @@ int dhcpv6_request(enum dhcpv6_msg type)
                // Receive rounds
                for (; len < 0 && (round_start < round_end);
                                round_start = odhcp6c_get_milli_time()) {
-                       uint8_t buf[1536], cmsg_buf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
+                       uint8_t buf[1536];
+                       uint8_t cmsg_buf[CMSG_SPACE(sizeof(struct in6_pktinfo))]
+                               __aligned(__alignof__(struct cmsghdr));
                        struct iovec iov = {buf, sizeof(buf)};
                        struct sockaddr_in6 addr;
                        struct msghdr msg = {.msg_name = &addr, .msg_namelen = sizeof(addr),