+ uint16_t stype, slen;
+ uint8_t *sdata;
+
+#ifdef EXT_PREFIX_CLASS
+ // Find prefix class, if any
+ dhcpv6_for_each_option(&prefix[1], odata + olen,
+ stype, slen, sdata)
+ if (stype == DHCPV6_OPT_PREFIX_CLASS && slen == 2)
+ entry.class = sdata[0] << 8 | sdata[1];
+#endif