[Openstack] [openstack][neutron] ipv6 DHCP state full issue

Ajay Kalambur (akalambu) akalambu at cisco.com
Fri Jan 23 22:53:23 UTC 2015


Hi
I am using Openstack Juno release to test some basic ipv6. I created a
ipv6 tenant network and subnet with ip6_ra_mode and ipv6_address_mode set
to
DHCPv6 stateful. The instance cannot get the DHCP ip address.

Reason seems to be that the DHCP advertise message in response to the DHCP
solicit message from the client says no address available
14:14:07.861197 IP6 (hlim 1, next-header UDP (17) payload length: 64)
fe80::f816:3eff:fee2:25ef.dhcpv6-client > ff02::1:2.dhcpv6-server: [udp
sum ok] dhcp6 solicit (xid=172906 (client-ID hwaddr/time type 1 time
454713283 5254005cbf62) (option-request DNS-server DNS-search-list
Client-FQDN SNTP-servers) (elapsed-time 295) (IA_NA IAID:1055008239
T1:3600 T2:5400))
14:14:07.862505 IP6 (class 0xc0, hlim 64, next-header UDP (17) payload
length: 92) fe80::f816:3eff:fe58:88c7.dhcpv6-server >
fe80::f816:3eff:fee2:25ef.dhcpv6-client: [udp sum ok] dhcp6 advertise
(xid=172906 (client-ID hwaddr/time type 1 time 454713283 5254005cbf62)
(server-ID hwaddr/time type 1 time 475357091 fa163e5888c7) (IA_NA
IAID:1055008239 T1:4294967295 T2:4294967295) (status-code no addresses))




Dnsmasq is launched fine and the hosts file on dhcp seems to be fine
fa:16:3e:e2:25:ef,host-2001-50--6.openstacklocal,[2001:50::6]

But somehow the DHCP advertise message shows no addresses

Ajay






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