Release floating IP before disassociate it

[Édouard Thuleau]

I use 2011.2~gamma2~bzr989-0ubuntu0ppa1~lucid1

I've got an allocated floating IP address associated to an instance and if I've release it before disassociate it, the floating IP stills associated to the instance (iptables rules stays active) and it's not longer listed by describe address command.

$ euca-describe-addresses
ADDRESS 10.193.175.20 i-00000008

$ euca-describe-instances
RESERVATION r-dhzxpqbu simple default
INSTANCE i-00000008 ami-00000002 10.193.175.20 172.16.1.4 running mykey 0 m1.small 2011-04-15T14:33:44Z nova

$ euca-release-address 10.193.175.20
ADDRESS 10.193.175.20

$ euca-describe-addresses

$ euca-describe-instances
RESERVATION r-dhzxpqbu simple default
INSTANCE i-00000008 ami-00000002 10.193.175.20 172.16.1.4 running mykey 0 m1.small 2011-04-15T14:33:44Z nova

(network node)# iptables -t nat -nvL
...
Chain nova-network-OUTPUT (1 references)
 pkts bytes target prot opt in out source destination
    0 0 DNAT all -- * * 0.0.0.0/0 10.193.175.20 to:172.16.1.4
...
Chain nova-network-PREROUTING (1 references)
 pkts bytes target prot opt in out source destination
    0 0 DNAT udp -- * * 0.0.0.0/0 10.193.175.25 udp dpt:1000 to:172.16.1.2:1194
    5 300 DNAT tcp -- * * 0.0.0.0/0 169.254.169.254 tcp dpt:80 to:10.193.175.44:8773
    0 0 DNAT all -- * * 0.0.0.0/0 10.193.175.20 to:172.16.1.4
...
Chain nova-network-floating-snat (1 references)
 pkts bytes target prot opt in out source destination
    1 60 SNAT all -- * * 172.16.1.4 0.0.0.0/0 to:10.193.175.20
...