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• PPTP server connection closes - Too much data?

  - by Sebastian Hoitz

  I set up a PPTP server for my company. However, every time I have another computer connected to this server (i.e. our backup server) and a lot of data gets transferred, the connection to this computer closes. In the syslog on the PPTP server I find this message: Apr 22 12:44:34 komola-chase pptpd[2581]: CTRL: Reaping child PPP[2583] Apr 22 12:44:34 komola-chase pppd[2583]: MPPE disabled Apr 22 12:44:34 komola-chase pppd[2583]: Connection terminated. Apr 22 12:44:34 komola-chase pppd[2583]: Exit. Apr 22 12:44:34 komola-chase pptpd[2581]: CTRL: Client 192.168.0.11 control connection finished Apr 22 12:55:11 komola-chase pptpd[2674]: GRE: xmit failed from decaps_hdlc: No buffer space available Apr 22 12:55:11 komola-chase pptpd[2674]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Apr 22 12:55:11 komola-chase pppd[2675]: Modem hangup Apr 22 12:55:11 komola-chase pppd[2675]: Connect time 23.0 minutes. Hopefully you can help me as to what is wrong. As far as I can tell, there is no compression enabled on the PPTP server (npbsdcomp option). Thank you!

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• Getting Partial / No Redundancy on VM's created on latest datastore

  - by Germano

  Hi, First some background. I'm in the process of upgrading my ESX servers from 3.5 to vSphere 4 and so far I have setup the new vCenter Server. Before I start the upgrade of the ESX, I needed more storage so I created 3 datastores from available space on my Equallogic PS6000 which has been connected for a while so as far as connectivity, nothing has changed. but now here's my problem, I get a "Partial / No Redundancy" on any VM that I create in any of these new datastores. I can create VM's on any of the older datstores on LUN's from exactly the same Equallogic and it works fine, but not the new ones. Keep in mind that these new datastores are the only ones that were created under the new vCenter, so I believe it must have something to do with it. Is anyone aware of any issues about creating datastored using the new vCenter but on a 3.5 ESX host? ISCSI with QLogic QLE406x Thanks in advance for nay help. Germano

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• PHP shared extensions on Linux

  - by F21

  I am running Ubuntu Server 12.04 and prefer to compile PHP myself as opposed to installing it using apt-get. PHP is running as PHP-FPM. When compiling extensions, I can set it to be compiled as a shared extension using something like --with-bcmath=shared and so on. Are there any benefits to compiling the extensions as shared? I also noticed that the extensions are compiled into a pretty convoluted folder. On my system (my php prefix is /usr/local/php-5.4.9) the extensions end up in /usr/local/php-5.4.9/lib/php/extensions/no-debug-non-zts-20100525. Is there a global way to set a folder so that all shared extensions will be compiled in there? I understand that I can do something like --with-foobar=shared,/usr/local/foobar/ but having to set the extension folder for each shared extension is inefficient and error-prone.

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• Dig returns "status: REFUSED" for external queries?

  - by Mikey

  I can't seem to work out why my DNS isn't working properly, if I run dig from the nameserver it functions correctly: # dig ungl.org ; <<>> DiG 9.5.1-P2.1 <<>> ungl.org ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24585 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 ;; QUESTION SECTION: ;ungl.org. IN A ;; ANSWER SECTION: ungl.org. 38400 IN A 188.165.34.72 ;; AUTHORITY SECTION: ungl.org. 38400 IN NS ns.kimsufi.com. ungl.org. 38400 IN NS r29901.ovh.net. ;; ADDITIONAL SECTION: ns.kimsufi.com. 85529 IN A 213.186.33.199 ;; Query time: 1 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Sat Mar 13 01:04:06 2010 ;; MSG SIZE rcvd: 114 but when I run it from another server in the same datacenter I receive: # dig @87.98.167.208 ungl.org ; <<>> DiG 9.5.1-P2.1 <<>> @87.98.167.208 ungl.org ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 18787 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;ungl.org. IN A ;; Query time: 1 msec ;; SERVER: 87.98.167.208#53(87.98.167.208) ;; WHEN: Sat Mar 13 01:01:35 2010 ;; MSG SIZE rcvd: 26 my zone file for this domain is $ttl 38400 ungl.org. IN SOA r29901.ovh.net. mikey.aol.com. ( 201003121 10800 3600 604800 38400 ) ungl.org. IN NS r29901.ovh.net. ungl.org. IN NS ns.kimsufi.com. ungl.org. IN A 188.165.34.72 localhost. IN A 127.0.0.1 www IN A 188.165.34.72 and the named.conf.options is default: options { directory "/var/cache/bind"; // If there is a firewall between you and nameservers you want // to talk to, you may need to fix the firewall to allow multiple // ports to talk. See http://www.kb.cert.org/vuls/id/800113 // If your ISP provided one or more IP addresses for stable // nameservers, you probably want to use them as forwarders. // Uncomment the following block, and insert the addresses replacing // the all-0's placeholder. // forwarders { // 0.0.0.0; // }; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { ::1; }; listen-on { 127.0.0.1; }; allow-recursion { 127.0.0.1; }; }; named.conf.local: // // Do any local configuration here // // Consider adding the 1918 zones here, if they are not used in your // organization // include "/etc/bind/zones.rfc1918"; zone "eugl.eu" { type master; file "/etc/bind/eugl.eu"; notify no; }; zone "ungl.org" { type master; file "/etc/bind/ungl.org"; notify no; }; The server is running Ubuntu 9.10 and Bind 9, if anyone can shed some light on this for me it'd make me very happy! thanks

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• what reverse proxy server will direct traffic to healthy servers whose health is based on a result string

  - by joshua paul

  what reverse proxy server will direct traffic to healthy servers whose health is based on a result string?? ideally i'd like something like dnsmadeeasy or ultradns - lol - but for reverse proxy i have looked at pound, delegate, ha proxy, squid, varnish, nginx, apache, and cherokee but can't see that they will work - they only test for HTTP result code scenario client request www.aaa.com www.aaa.com is a reverse proxy reverse proxy looks at "test.php" on server 1.aaa.com, 2.aaa.com and 3.aaa.com for result string "OK" if the server is "OK" then proxy requests to them help!

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• Coldfusion deployment under Apache Tomcat with Virtual Hosts

  - by smalltiger85

  Hello, I'm looking for the proper way to share the Coldfusion engine for all my Virtual Hosts. This is how I have the virtual hosts configured on server.xml in the Tomcat conf: <Host name="localhost" appBase="webapps" unpackWARs="false" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> <Context path="" docBase="cfusion/" reloadable="true" privileged="true" antiResourceLocking="false" anitJARLocking="false" allowLinking="true"/> </Host> <Host name="mysite1" appBase="webapps" xmlValidation="false" xmlNamespaceAware="false"> <Context path="" docBase="/mnt/webroot/mysite1" /> </Host> This is not valid for me because I'm instantiating one Coldfusion process for every virtual host, and it requires me to copy the WEB-INF folder in every site. My question is, is there any way to share the same Coldfusion instance for every virtual host, mantaining the sites webroot outside of the cfusion folder? I'm using Apache Tomcat 6 and Coldfusion Enterprise edition 8. Many thanks.

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• What can I do to speed up createrepo?

  - by jsd

  We are using a yum repository to distribute our software to our production instances. Unfortunately, createrepo is becoming a bottleneck, and we only have 469 packages in the repository. $ time createrepo /opt/tm-yum-repo Spawning worker 0 with 469 pkgs Workers Finished Gathering worker results Saving Primary metadata Saving file lists metadata Saving other metadata Generating sqlite DBs Sqlite DBs complete real 0m43.188s user 0m37.798s sys 0m1.296s What can I do to make it faster?

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• Deleting windows.edb and unchecking Indexing service lead to hard drive file records swapping

  - by linni

  I followed the instructions listed here:http://www.mydigitallife.info/2007/09/18/turn-off-and-disable-search-indexing-service-in-windows-xp/ to free up space on hard drive by deleting the windows.edb indexing file... I also stopped windows search service as mentioned in the comments following the article. In addition to unchecking the "Allow Indexing Service to index this disk for fast file searching" check box on the properties dialog for the C:\ drive, I did the same for two usb connected hard drives (J:\ and I:\ ). I'm not sure why I did that, thought it might shrink the windows.edb file so I wouldn't have to delete it (which sounded a bit risky in my ears at the time). The file of course didn't shrink so I ended up deleting it and freeing up over 3 GB of space, yeehaw. However, as soon as I had done this I could not access the usb connected hard drives anymore. The error I got was "I:\photos is not accessible" "The file or directory is corrupted and unreadable" when I tried to open the photos directory on I:\ Here is where I enter the twilight zone... I try disconnecting I:\ usb hard drive. But XP shows me that instead J:\ drive has disconnected and I:\ is still there. So I disconnect both drives and restart the computer. I then connect one drive, but it lists up the contents of the other drive on root level. I tried connecting the drives vice versa and the same thing happens. I try taking one of the hard drives to another computer and when I connect it there it lists up not its own contents but the contents of the other hard drive and gives the same error as above when I try and access any of the folders (even folders on the root that have the same name as folders on the other drive (e.g. J:\photos and I:\photos)??? And no, this is not a me mixing up my drive letters. Computer Manager - Disk management shows the same result as explorer: The drive size is correct (one is 500GB, the other is 640GB) but the drive name is of the opposite drive, as long as the contents. Also, one drive was full of data and the other almost empty but they incorrectly show their free space status of the other drive. Somehow the usb drives seem to have switched file tables, file records, boot records or something, extremely weird! Even weirder, if I try and create a text file or folder on this drive, it works fine, accessing them, saving, whatever, all good, but accessing any other data on the drive gives me an error. Does anyone have a clue what is going on and more importantly, how I can restore the correct folder listings to access my family photos ??? cheers, linni

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• Flexible traffic & bandwidth monitor

  - by BrNathan

  I have looked around, but have not found anything to meet our needs. I need something that can log all connections & bandwidth consumption. We need it for analysis: by protocol, source IP (& MAC if possible), destination, etc. Ideally we are looking for something that can produce custom graphs & also uses mysql. All connections go through one server on a bridged connection (2 network cards) so it is easy to pickup traffic. We are not concerned so much with internal LAN traffic as what passes in & out to the firewall. Thanks for you suggestions. Update: I use Ubuntu 10.04

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• attach / detach mssql 2008 sql server manager [SOLVED]

  - by Tillebeck

  An external consult wrote a guide on how to copy a database. Step two was detach the database using Sql Server Manager. After the detach the database was not visible in the SQL Server Manager... Not much to do but write a mail to the service provider asking to have the database attached again. The service porviders answer: Not posisble to attach again since the SQL Server security has been violated". Rolling back to last backup is not the option I want to use. Can any one give feedback if this seems logic and reasonable to assume that a detached database in a SQL Server 2008 accessed through SQL Server Manager cannot be reattached. It was done by rightclicking the database and choosing detach. -- update -- Based on the comments below I update the question with the server setup. There are two dedicated servers: srv1: Web server with remote desktop and an Sql Server Manager srv2: Sql server that can be accessed through the Sql Server Manager on the web server -- update2 -- After a restart of the server the DBA could suddenly do the attachment of the database. And I guess that after the restart it was a simple task. So all of your answer were rigth! It seems that I can only mark one as a correct answer so I marked the first answer correct. But all are correct answer. Thanks a lot. Without posting the link to this thread then we might had so suffer while watching our database beeing restored by a backup :-) Thanks a lot. BR. Anders

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• How to use hamachi to transfer files over a private network

  - by user28233

  please help, How to use hamachi to transfer files over a private network

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• /proc/net/dev and /sys/class/net/ bogus network interface names

  - by sfink

  I am constructing a list of network interfaces to monitor based on the contents of /proc/net/dev. But I am getting some bogus interfaces in the list: __tmp1104705027 __tmp974528607 Where do those come from? They also show up in /sys/class/net/: # ls -1 /sys/class/net/ eth0 eth1 eth2 eth3 lo sit0 __tmp1104705027 __tmp974528607 For now, I think I'll just ignore anything starting with __tmp, but I'd like to know what they are and where they come from. This is on a recompiled CentOS 5.3 kernel: 2.6.18-128.7.1.el5.tvh.7PAE #1 SMP PREEMPT

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• How to limit processor time for specific web site running under IIS on windows web server 2008?

  - by Alexey Zakharov

  Hi guys, What tool could I use to limit processor time for specific web site running under IIS on windows web server 2008? Best regards, Alexey Zakharov

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• start-onlinecoexistencesync o365 Powershell

  - by Matt Bear

  I've been on the phone with microsoft for over an hour trying to get a straight answer from them, and if I was set up to test this myself right now I could find out. I'm deploying o365 SSO in stages by OU, dir sync is performed every 3 hours. I need to do a sync right away. Will 'start-onlinecoexistencesync' only sync those users that have already been federated, or will it force a federation of all users?

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• Windows 2008 terminal server - How to restrict access to DVD/floppy?

  - by test1839

  I has a very simple task. I need to block access to removable media (CD, DVD, floppy, USB drives etc.) on a Windows 2008 R2 Terminal Server for users and allow it for admins. I tried to enable the following policy in GPO: User Configuration/Administrative Templates/System/Removable Storage Access All Removable Storage classes: Deny all access = Enabled But it did not work. I tried different physical and virtual 2008 servers with the same result. It works on Windows 7 but not on Windows 2008. Has anyone had success with this parameter on Windows 2008? Thank you

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• Is it possible to rate limit based on host headers? i.e. not just on ip address

  - by Blankman

  I have a web service endpoint that I am building where people will post an xml file to, and it will really get pounded with over 1K requests per second. Now they are sending in these xml files via http post, but a good majority of them will be rate limited. The problem is, the rate limiting will be done by the web application by looking up the source_id in the xml, and if it is over x requests per minute, it will not be processed further. I was wondering if I could do rate limit checking earlier in the processing somehow and thus save the 50K file going threw the pipeline to my web servers and eating up resources. Could a load balancer make a call out to verify rate usage somehow? If this is possible, I could maybe put the source_id in a host header so even the XML file doesn't have to be parsed and loaded into memory. Is it possible to just look at host headers and not load up the entire 50K xml file into memory? I really appreciate your insights as this takes more knowledge of the entire tcp/ip stack etc.

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• Does DKIM works with subdomains?

  - by Feelsgoodman

  ISP's recommend you segment your marketing and transactional emails by using different IPs. I want to start using DKIM, but since DKIM is a domain based reputation system I wonder if signing with the same company.com domain will impact the reputation of transactional emails, since both them and marketing will be signed with the same domain? Is using DKIM with subdomains possible? Would something like this: bulk.company.com and transactional.company.com be a good idea? Thanks!

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• Nginx returning 444 for PUT and DELETE

  - by Zorrocaesar

  I'm trying to build a REST API through Nginx and everything works fine except when I the requests are PUT or DELETE. In these cases, Nginx returns 444 (no response). I did some research and all I could find was something about Nginx being configured with the "--with-http_dav_module" option. I've checked that with nginx -V and and it seems that it was configured with this. So, any idea what else could it be?

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• What are some hosted MySQL solutions?

  - by bigmac

  I would like to host a MySQL database somewhere. The basic solution would be to get a VPS, but then I am stuck doing all the sysadmin stuff. It's not terribly difficult if you are not doing anything fancy, but if something goes wrong (like a security breach), it may be hard to resolve or even diagnose in the first place. On the other end of the spectrum, I found Xeround and Amazon RDS. Xeround is not exactly standard MySQL. Amazon seems a bit complex to get started (which is weird because they specifically say it is "simple to deploy"). Why is there nothing in the middle? Is there no demand for a basic hosted MySQL solution?

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• Fedora vs Ubuntu to host Subversion and Bugzilla over Apache

  - by Tone

  I'm not interested in a flame war of Ubuntu vs Fedora vs whatever. What I am interested in is whether or not I should move my current Ubuntu server to Fedora. I have been able to get Subversion setup and hosted via Apache over https and it works quite well (I'm a .NET guy so this was all new to me). I'm having trouble though with installing Bugszilla - have run into some issues getting all the perl scripts to run successfully so my questions are: 1) Will Bugszilla will install easier on Fedora? Can I just install a package instead of having to download the tar.gz file and untar it, run perl scripts, etc. 2) Is Fedora considered to be a better production server system? I have no desire for a GUI, just need it to host Subversion, Bugzilla over Apache2, and act as a file and print server for my home network.

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• How can I bridge a VM to a remote network?

  - by asciiphil

  I have a system running QEMU/KVM (via libvirt). One of its VMs needs to have a presence on a subnet that is not local to the VM host. I have a Linux system on the remote subnet. Is there a way to set up some sort of tunneled bridge to cause the VM to appear present on the remote system? This will be a temporary situation (hopefully just until the VM owner can configure their system) and network performance and long-term maintainability aren't really issues. To give some more concrete information: My VM host has IP address 192.168.54.155/24. The VM has IP address 192.168.65.71/24. I have a remote system at 192.168.65.254/24. Both the VM host and remote system are running Scientific Linux 6.5. I do not control the network or routing in between the VM host and remote system. I do not have access to the guest OS on the VM. I would like traffic to the VM's IP address to end up at the VM even though its host isn't directly connected to the appropriate network. I've tried using iproute2's tunnelling, but Linux won't let me add a tunnel to a bridge. I've considered using some sort of iptables mangling to route traffic over the tunnel and make the VM think it's on the right network, but I'm not sure whether there are better approaches. What's the best way to accomplish this hack?

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• Setting up a vpn and IIS IP address restrictions

  - by carpat

  I'm trying to get a VPN set up with internal access only sites. I have set up a VPN on a windows server (single VPS server), and I can connect from a remote computer and I get an IP assigned correctly (from 192.168.1.1 - 255) Next I configured IIS (running on the same machine) IP Address and Domain Restrictions to only allow only IP address range 192.168.1.0 with subnet mask 255.255.255.0 When I connect to the VPN with "Use Default Gateway on Remote Network" (so that requests must go through the vpn), I get a 403 from the internal sites. What did I miss?

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• How to set up IP forwarding on Nexenta (Solaris)?

  - by Gleb

  I am trying to set up IP forwarding on my Nexenta box: root@hdd:~# uname -a SunOS hdd 5.11 NexentaOS_134f i86pc i386 i86pc Solaris The box has 2 network interfaces: root@hdd:~# ifconfig -a lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1 inet 127.0.0.1 netmask ff000000 e1000g1: flags=1001100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4,FIXEDMTU> mtu 1500 index 2 inet 192.168.12.2 netmask ffffff00 broadcast 192.168.12.255 ether 68:5:ca:9:51:b8 myri10ge0: flags=1100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4> mtu 9000 index 3 inet 10.10.10.10 netmask ffffff00 broadcast 10.10.10.255 ether 0:60:dd:47:87:2 lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1 inet6 ::1/128 192.168.12.0 is my normal LAN with 192.168.12.1 being the firewall/gateway 10.10.10.0 is a separate LAN for iSCSI (with no internet access) I want to set up IP forwarding so that a computer on 10.10.10.0 will be able to access the internet by using 10.10.10.10 as a gateway (I don't need any port forwarding) I have turned on IP forwarding: root@hdd:~# routeadm Configuration Current Current Option Configuration System State --------------------------------------------------------------- IPv4 routing disabled disabled IPv6 routing disabled disabled IPv4 forwarding enabled enabled IPv6 forwarding disabled disabled Routing services "route:default ripng:default" Routing daemons: STATE FMRI disabled svc:/network/routing/rdisc:default disabled svc:/network/routing/route:default disabled svc:/network/routing/legacy-routing:ipv4 disabled svc:/network/routing/legacy-routing:ipv6 disabled svc:/network/routing/ripng:default online svc:/network/routing/ndp:default But when I dry to start ipnat, I get an error: root@hdd:~# ipnat -CF -f /etc/ipf/ipnat.conf ioctl(SIOCGNATS): I/O error Here is the config: root@hdd:~# cat /etc/ipf/ipnat.conf #!/sbin/ipnat -f - # map e1000g1 10.10.10.10/24 -> 192.168.12.2/32 So the question is how to fix this.. Thanks in advance!

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• Good Books About Scaling Up Databases/Servers/etc.?

  - by Mehrdad

  I've applied for an internship at a startup company that expects its user base to grow by a large factor in a small amount of time, and so part of their project is to scale everything up so that they're ready: handling more/larger requests efficiently, handling server failures, load balancing, getting more JavaScript to run faster on the client computers, etc. Part of my job will also be figuring out what to do, so it's not obvious what my exact task will be at the moment. I was told that I should start reading up a little more about this so that I would have a little bit of an idea of what to do. What are some good books for me to read on this topic? I have a little bit of experience with the usage of MySQL (and also a little experience with web development), but in no way do I claim any knowledge on the internal workings of databases or distributed systems, so I might need readings more on the introductory side.

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• domain is pointing to default static page on server but settings look correct

  - by Cues

  I have edited my apache vhost file in /etc/apache2/sites-enabled to add the following: <VirtualHost *:80> ServerName www.mysite.cn ServerAlias mysite.cn *.mysite.cn DocumentRoot /home/user/static/mysite/cn </VirtualHost> It still points to the default site on the server when i browse to mysite.cn but when i enter anything along the lines of ww3.mysite.cn it point to the new correct document root any clues of what the problem could be as i am lost.

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