Hello,
my routing box is just a ZBOX with a general purpose linux - a CentOS
with the tunnel I get a /64 and optional a /48
let's say the /48 is: 2001:db8:1::/48
now what I have/did ...
the NIC on LAN side of the routing box has 2001:db8:1::1 with a prefix length of 48
and fe80::1 as a secondary scope:link IPv6
as I share the LAN with my room mate and I told him, that he can use this: 2001:db8:1:2000::/64
and all his Windows machines (physical and virtual) have addresses within this prefix and a configured prefix length of 48
I myself use this: 2001:db8:1:1::/64 and also a configured prefix length of 48
the default gateway either coming by RADVd or for fixed IPv6 configuration is always fe80::1
there I have a few linux servers virtualized:
a Mail server 2001:db8:1:1::10
a DNS server 2001:db8:1:1::1
and a proxy server 2001:db8:1:1::20
they all have 48 as prefix len configured on their virtual NIC
the ISC DHCP I configured with this:
/etc/dhcp/dhcpd6.conf
ddns-updates off;
update-static-leases true;
allow leasequery;
authoritative;
default-lease-time 7200;
max-lease-time 86400;
dhcpv6-lease-file-name "/var/lib/dhcpd/dhcpd6.leases";
subnet6 2001:db8:1::/48 {
range6 2001:db8:1:7fff:0:0:0:0 2001:db8:1:7fff:ffff:ffff:ffff:ffff;
range6 2001:db8:1:7fff::/64 temporary;
option dhcp6.name-servers 2001:db8:1::1, 2001:db8:1:1::1;
option dhcp6.domain-search "example.com";
option dhcp6.info-refresh-time 600;
option dhcp6.preference 255;
}
the /etc/radvd.conf looks this simple:
interface br0
{
AdvSendAdvert on;
# stateful DHCPv6: on
# stateless DHCPv6 (SLAAC): off
AdvManagedFlag on;
# get DNS from DHCPd6: on
# get DNS from RADVd: off
AdvOtherConfigFlag on;
MinRtrAdvInterval 5;
MaxRtrAdvInterval 15;
route fe80::1/64
{
AdvRouteLifetime infinity;
AdvRoutePreference high;
};
};
on the routing box the br0 device is a bridge between
the LAN device eth0 and the WLAN device wlan0
connections from any host configured with a fixed IPv6 to the 4 mentioned servers is no problem;
but from hosts getting their IPv6 from DHCPv6 this times out and no connection possible;
native connection to the internet is no problem;
just for a testing purpose I changed the configured prefix len of 48 to 64 at the mail server;
then it is possible for DHCPv6 configured clients to connect, but when I do a ping on the mail server to such a host
this looks like:
# ping6 2001:db8:1:7fff:2008:2dc9:82ed:1d14
PING 2001:db8:1:7fff:2008:2dc9:82ed:1d14 56 data bytes.
64 bytes from 2001:db8:1:7fff:2008:2dc9:82ed:1d14: icmp_seq=1 ttl=128 time=0.541 ms
64 bytes from 2001:db8:1:7fff:2008:2dc9:82ed:1d14: icmp_seq=1 ttl=128 time=0.541 ms (DUP!)
64 bytes from 2001:db8:1:7fff:2008:2dc9:82ed:1d14: icmp_seq=2 ttl=128 time=0.540 ms
64 bytes from 2001:db8:1:7fff:2008:2dc9:82ed:1d14: icmp_seq=2 ttl=128 time=0.540 ms (DUP!)
where did I made some mistake?
the goal should be the following:
the router box should have 1 IPv6 address as it has now, and I guess this must be configured with prefix len 48
and IPv6 addresses of several /64 prefixes are used independent;
please tell me what I should/must do different;
Thanks,
Walter
None of your subnets should have a /48, you need to subnet the /48 into /64s and use those
can you please tell a little bit more details ...
e.g. the workstation of my mate should use an IPv6 from 2001:db8:1:2000::/64
and for my workstation I want to use an IPv6 from 2001:db8:1:1::/64
which IPv6 addresses must be configured on the routing box?
and can any host use this default gateway fe80::1 as they are all inside the same LAN?
Thanks
Walter