IPv6 vrrp and bind transparent

[Philipp Kolmann]

Hi,

I am new to the list. Please excuse if this has been discussed before, 
but I didn't find it in the archives.

I have 2 linux boxes sharing ipv4 addressess for high available LDAP 
Access to our AD infrastructure with keepalived and then forwarding the 
requests to our 3 AD Servers.

With ipv4 it works without issues:

listen  dc-intern-ldap
        bind 128.130.30.20:389 transparent
        mode tcp
        option  tcplog
        log     global
        balance leastconn
        server  dc01 128.130.30.21:389 maxconn 5000 check
        server  dc02 128.130.30.22:389 maxconn 5000 check
        server  dc03 128.130.30.23:389 maxconn 5000 check

if 128.130.30.20 is not assiged on the secondary node, nothing fails. 
when keepalived switches over, everything works as expected.

with 1.5-dev13 I read the ipv6 transparent works now as well:

listen  dc-intern-ldap-v6
        bind 2001:629:1005:30::20:389 transparent
        mode tcp
        option  tcplog
        log     global
        balance leastconn
        server  dc01 2001:629:1005:30::21:389 maxconn 5000 check
        server  dc02 2001:629:1005:30::22:389 maxconn 5000 check
        server  dc03 2001:629:1005:30::23:389 maxconn 5000 check

Sadly, this fails on the secondary server, since 2001:629:1005:30::20 is 
not currently active:
Starting haproxy: haproxy[ALERT] 085/083351 (31506) : Starting proxy 
dc-intern-ldap-v6: cannot bind socket [2001:629:1005:30::20:389] failed!

Have I don't something wrong? I would like to also provide IPv6 access 
to our LDAP infrastructure (and www later on as well).

thanks
Philipp