Messages in this thread | | | Date | Sun, 30 Mar 2003 22:08:29 +0900 (JST) | Subject | Re: (usagi-users 02296) IPv6 duplicate address bugfix | From | YOSHIFUJI Hideaki / 吉藤英明 <> |
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In article <20030330122705.GA18283@ferrara.linux.it> (at Sun, 30 Mar 2003 14:27:05 +0200), Simone Piunno <pioppo@ferrara.linux.it> says:
> When adding an IPv6 address to a given interface, I'm allowed to > add that address multiple time, e.g.: > > [root@abulafia root]# ip addr add 3ffe:4242:4242::1 dev eth0 > [root@abulafia root]# ip addr add 3ffe:4242:4242::1 dev eth0 > [root@abulafia root]# ip addr add 3ffe:4242:4242::1 dev eth0 > [root@abulafia root]# ip addr show dev eth0 > 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100 > link/ether 00:48:54:1b:25:30 brd ff:ff:ff:ff:ff:ff > inet6 3ffe:4242:4242::1/128 scope global > inet6 3ffe:4242:4242::1/128 scope global > inet6 3ffe:4242:4242::1/128 scope global > inet6 fe80::248:54ff:fe1b:2530/10 scope link > > Apparently, this is not a stability problem, because I'm allowed to > delete 3 times that address before receving a "not found" error, > but there's no reason to allow multiple instances of the same address > on the same interface, so this is a bug nonetheless. > > Bug is confirmed on: > - 2.4.20 > - 2.5.66 > - latest -usagi
usagi code does not act like that.
In my environment,
# ip addr add 3ffe:4242:4242::1 dev eth0 # ip addr add 3ffe:4242:4242::1 dev eth0 RTNETLINK answers: No buffer space available # ip addr add 3ffe:4242:4242::1 dev eth0 RTNETLINK answers: No buffer space available
And, patch does not seem optimal. I'd take a look at very soon.
-- Hideaki YOSHIFUJI @ USAGI Project <yoshfuji@linux-ipv6.org> GPG FP: 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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