[PATCH] IPV6: fix checking for reserved subnet anycast

[YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@xxxxxxxxxx>]

Reserved subnet anycast is as follows:
   11111101 11....11 1xxxxxxx
The code checking for reserved subnet anycast in 
__ipv6_regen_rndid() was incorrect.

D: fix checking for reserved subnet anycast in __ipv6_regen_rndid().

===== net/ipv6/addrconf.c 1.90 vs edited =====
--- 1.90/net/ipv6/addrconf.c    Sun Jan 25 03:09:52 2004
+++ edited/net/ipv6/addrconf.c  Tue Feb  3 01:39:19 2004
@@ -1147,7 +1147,7 @@
         *  - XXX: already assigned to an address on the device
         */
        if (idev->rndid[0] == 0xfd && 
-           
(idev->rndid[1]&idev->rndid[2]&idev->rndid[3]&idev->rndid[4]&idev->rndid[5]&idev->rndid[6])
 &&
+           
(idev->rndid[1]&idev->rndid[2]&idev->rndid[3]&idev->rndid[4]&idev->rndid[5]&idev->rndid[6])
 == 0xff &&
            (idev->rndid[7]&0x80))
                goto regen;
        if ((idev->rndid[0]|idev->rndid[1]) == 0) {

-- 
Hideaki YOSHIFUJI @ USAGI Project <yoshfuji@xxxxxxxxxxxxxx>
GPG FP: 9022 65EB 1ECF 3AD1 0BDF  80D8 4807 F894 E062 0EEA