netdev - nonlocal_bind & IPv6

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Message-Id: <201006252043.45581.michal.humpula@hudrydum.cz>
Date:	Fri, 25 Jun 2010 20:43:45 +0200
From:	Michal Humpula <michal.humpula@...rydum.cz>
To:	netdev@...r.kernel.org
Subject: nonlocal_bind & IPv6

Hi, 

I was just wondering, what's wrong with this?

*** linux-2.6.34/net/ipv6/af_inet6.c    2010-05-16 23:17:36.000000000 +0200
--- linux-2.6.34-hack/net/ipv6/af_inet6.c       2010-06-25 19:50:19.000000000 +0200
***************
*** 345,354 ****
--- 345,356 ----
                        if (!(addr_type & IPV6_ADDR_MULTICAST)) {
                                if (!ipv6_chk_addr(net, &addr->sin6_addr,
                                                   dev, 0)) {
+           if (!sysctl_ip_nonlocal_bind) {
                                        err = -EADDRNOTAVAIL;
                                        goto out_unlock;
            }
                                }
+                       }
                        rcu_read_unlock();
                }
        }

Motivation: just want to balance one IPv6 address between two nodes with the help of 
keepalived the same way I do it with IPv4 without the need of restarting the daemons 
binding on that IP.

Regards

Michal Humpula
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