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ASF GitHub Bot commented on CLOUDSTACK-9317: -------------------------------------------- Github user yvsubhash commented on a diff in the pull request: https://github.com/apache/cloudstack/pull/1908#discussion_r96598944 --- Diff: server/src/com/cloud/network/router/CommandSetupHelper.java --- @@ -823,13 +826,39 @@ public int compare(final PublicIpAddress o1, final PublicIpAddress o2) { associatedWithNetworkId = ipAddrList.get(0).getNetworkId(); } + // for network if the ips does not have any rules, then only last ip + List<IPAddressVO> userIps = _ipAddressDao.listByAssociatedNetwork(associatedWithNetworkId, null); + + int ipsWithrules = 0; + int ipsStaticNat = 0; + for (IPAddressVO ip : userIps) { + if ( _firewallsDao.countRulesByIpIdAndState(ip.getId(), FirewallRule.State.Active) > 0 ) { + ipsWithrules++; + } + + if (ip.isOneToOneNat()) { + ipsStaticNat++; + } + } + final IpAssocCommand cmd = new IpAssocCommand(ipsToSend); cmd.setAccessDetail(NetworkElementCommand.ROUTER_IP, _routerControlHelper.getRouterControlIp(router.getId())); cmd.setAccessDetail(NetworkElementCommand.ROUTER_GUEST_IP, _routerControlHelper.getRouterIpInNetwork(associatedWithNetworkId, router.getId())); cmd.setAccessDetail(NetworkElementCommand.ROUTER_NAME, router.getInstanceName()); final DataCenterVO dcVo = _dcDao.findById(router.getDataCenterId()); cmd.setAccessDetail(NetworkElementCommand.ZONE_NETWORK_TYPE, dcVo.getNetworkType().toString()); + boolean remove = false; + // if there is only one static nat then it will be checked for remove at the resource + if (ipsWithrules == 0 && (ipsStaticNat == 0 || ipsStaticNat == 1)) { --- End diff -- Can you combine these two if blocks and eliminate remove variable if this is not getting used at a later place > Disabling static NAT on many IPs can leave wrong IPs on the router > ------------------------------------------------------------------ > > Key: CLOUDSTACK-9317 > URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9317 > Project: CloudStack > Issue Type: Bug > Security Level: Public(Anyone can view this level - this is the > default.) > Components: Management Server, Virtual Router > Affects Versions: 4.7.0, 4.7.1, 4.7.2 > Reporter: Jeff Hair > > The current behavior of enabling or disabling static NAT will call the apply > IP associations method in the management server. The method is not > thread-safe. If it's called from multiple threads, each thread will load up > the list of public IPs in different states (add or revoke)--correct for the > thread, but not correct overall. Depending on execution order on the virtual > router, the router can end up with public IPs assigned to it that are not > supposed to be on it anymore. When another account acquires the same IP, this > of course leads to network problems. > The problem has been in CS since at least 4.2, and likely affects all > recently released versions. Affected version is set to 4.7.x because that's > what we verified against. -- This message was sent by Atlassian JIRA (v6.3.4#6332)