I use a DHCPv6 server (Centos) to configure hosts with a global IPv6 address. For the internal communications I want to use Unique Local addresses (ULA). Can I configure 2 DHCPv6 servers on the same link so that the host have both adresses(global and ula) ?

I only get a fd80:abcd::254 address on my Win7 laptop and not a 201:db8:1234:3::/64 address. Is there something what do wrong or I missed?

Here below are my router (fortigate) and my DHCPv6 server config

**fortygate_fw_van~ (ipv6) # show
config ipv6
set ip6-address 2001:db8:1234:3::1/64
config ip6-extra-addr
edit fd80:abcd::1/64
set ip6-manage-flag enable
set ip6-other-flag enable
config ip6-prefix-list
edit 2001:db8:1234:3::/64
edit fd80:abcd::/64
set ip6-send-adv enable

.@ipv6-wms:/etc/dhcp>cat dhcpd6.conf
shared-network ipv6test {
subnet6 fd80:abcd::/64 {
range6 fd80:abcd::100 fd80:abcd::254;
option dhcp6.name-servers 2001:db8:1234:3::2;
option dhcp6.domain-search "ipv6.local";
} subnet6 2001:db8:1234:3::/64 {
range6 2001:db8:1234:3::100 2001:db8:1234:3::254;
option dhcp6.name-servers 2001:db8:1234:3::2;
option dhcp6.domain-search "ipv6.local";

1 Answer 1


You don't need two DHCPv6 servers, you need one server that gives out both addresses. And don't forget to include both prefixes in your Router Advertisements!


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