Fix heuristic not to be byte-order-dependent.

I'm *guessing* that the item being fetched is big-endian; the "vt"
protocol might be old enough that they developed it on (non-Sun386i) Sun
workstations, assuming they didn't just say "this is an Internet
protocol, hence fields are big-endian").

That also prevents problems on platforms that don't support unaligned
accesses.

diff --git a/print-udp.c b/print-udp.c
index c3edf6ef5de19b855731cd0c30bf07ab6a2d0275..7e44f999f7638606ace8884002559f9030b13979 100644 (file)
--- a/print-udp.c
+++ b/print-udp.c
@@ -97,7 +97,7 @@ static void
 vat_print(netdissect_options *ndo, const void *hdr, register const struct udphdr *up)
 {
        /* vat/vt audio */
-       u_int ts = *(uint16_t *)hdr;
+       u_int ts = EXTRACT_16BITS(hdr);
        if ((ts & 0xf060) != 0) {
                /* probably vt */
                ND_PRINT((ndo, "udp/vt %u %d / %d",