(void*)(opt + opt->len) <= (void*)(end); opt += opt->len)
-#define MaxRtrAdvInterval 600
-#define MinRtrAdvInterval (MaxRtrAdvInterval / 3)
-#define MaxValidTime 7200
-#define MaxPreferredTime (3 * MaxRtrAdvInterval)
+#define MaxValidTime 65535
+#define MaxRtrAdvInterval 1800
#define ND_RA_FLAG_PROXY 0x4
#define ND_RA_PREF_HIGH (1 << 3)