+ if (len != 6) {
+ ND_PRINT((ndo, " (length bogus, should be = 6)"));
+ return 0;
+ }
+ ND_TCHECK_4(p + 2);
+ ND_PRINT((ndo, ": %s", ipaddr_string(ndo, p + 2)));
+ break;
+ default:
+ /*
+ * Unknown option; dump it as raw bytes now if we're
+ * not going to do so below.
+ */
+ if (ndo->ndo_vflag < 2)
+ print_unknown_data(ndo, p + 2, "\n\t ", len - 2);
+ break;
+ }
+ if (ndo->ndo_vflag > 1)
+ print_unknown_data(ndo, p + 2, "\n\t ", len - 2); /* exclude TLV header */
+ return len;
+
+trunc:
+ ND_PRINT((ndo, "[|ipcp]"));
+ return 0;
+}
+
+/* IP6CP config options */
+static u_int
+print_ip6cp_config_options(netdissect_options *ndo,
+ const u_char *p, u_int length)
+{
+ u_int opt, len;
+
+ if (length < 2)
+ return 0;
+ ND_TCHECK_2(p);
+ opt = EXTRACT_U_1(p);
+ len = EXTRACT_U_1(p + 1);
+ if (length < len)
+ return 0;
+ if (len < 2) {
+ ND_PRINT((ndo, "\n\t %s Option (0x%02x), length %u (length bogus, should be >= 2)",
+ tok2str(ip6cpopt_values,"unknown",opt),
+ opt,
+ len));
+ return 0;
+ }
+
+ ND_PRINT((ndo, "\n\t %s Option (0x%02x), length %u",
+ tok2str(ip6cpopt_values,"unknown",opt),
+ opt,
+ len));
+
+ switch (opt) {
+ case IP6CP_IFID:
+ if (len != 10) {
+ ND_PRINT((ndo, " (length bogus, should be = 10)"));
+ return len;
+ }
+ ND_TCHECK_8(p + 2);
+ ND_PRINT((ndo, ": %04x:%04x:%04x:%04x",
+ EXTRACT_BE_U_2(p + 2),
+ EXTRACT_BE_U_2(p + 4),
+ EXTRACT_BE_U_2(p + 6),
+ EXTRACT_BE_U_2(p + 8)));
projects / tcpdump / blobdiff