Fedora Networking :: Virtual Interface Fails After Reboot?
Jul 1, 2009
I am applying a virtual interface (eth0:0) which is failing after the system reboots. It actually cause the default interface (eth0) to fail as well, I must manually go in and remove the configuration for the eth:0:0 and restart the network to get it running again. How do I successfully add a Virtual interface to Fedora 11 that will stick when rebooted.
running fc10 in a vmware setup Added /etc/sysconfig/network-scripts/ifcfg-eth0:0 to create another interface and all works fine (IPADDR=10.99.56.98). Would you expect this to be available after a reboot, last reboot I had to run ifup eth0:0
I have installed Fedora 14 about 4 days ago. I have set all the networking parameters like dns path, hostname etc. I have also ensured that I select the check-box for "Enable automatically when system starts" for eth0 interface. But weirdly, whenever I boot my system(or restart), I see that the interface eth0 is disabled. I have to manually enter as root and enable it, each time I boot/reboot my system. Why is this happening? Could you please suggest a way so that I have eth0 interface enabled always when I boot up?Also, my domainname also is not boot-persistent. What steps should I take to ensure that the domainname set once persists across reboots?
is it possible to setup a DHCP server using the loopback or a virtual interface? I installed Sun VirtualBox on my fedora system and want to try and kickstart them from within the same box on a virtual network. Is this possible and has anyone done it? I only have a single NIC in the box and it is on my public network.
When I create virtual ethernet interface and do a ping -I <v_int> <host> the outgoing address is the one of the physical interface and NOT the virtual interface.Is there no chance that trafic will go out with virtual interface address??Incoming trafic is done well i.e. responds to the virtual interface have the virtual address.
My problem is that I have 2 modems and want to check both default gw behind the modems. If I do a "normal" ping both are reachable over default route even the modem which is not the default route will not work because ping goes over the working modem.So I have 2 routing tables and want to route the virtual interface to one modem the other to the other modem
I have an ubuntu server that I am using as a gateway router. I have 2 nics in the machine and am using iptables to run the NAT.I now have a need to provide several machines on the inside of the network with their own public IP. So I created a virtual interface on the the WAN card and attempted a 1:1 nat across it, but it's not working. The virtual interface isn't even responding to pings. If I ping the ip of the virtual interface from the outside, it doesn't work. If I run a tcpdump on the interface, I can see ICMP request packets but no replies. Watching the same dump while pinging the non-virtual interface IP results in both request and reply packets. What's stranger the inbound ICMP request packets on the virtual interface seem to be hit or miss. Sometimes when I ping it, I can see the request packets hitting the interface, sometimes I get nothing.
I have a webserver with 3 virtual interfaces named eth0:1 eth0:3 and eth0:3. Until yesterday all the virtual ip's worked but eth0:1 decided that it just won't work anymore since yesterday. The configs are:
how to do a virtual interface under linux. I'm using for example eth0:1 so ifconfig eth0:1 192.168.0.20 netmask 255.255.255.0 for example.
However if i do eth0:1 hw ether 00:11:22:33:44:55 It changes eth0 as well. Where should i look into for creating a separate virtual interface that's simply bridged with one of the existing interfaces that has a separate ip and hw address that the os handles.
I need to make some solution for my home network, I have a linux server which is: Linux Centos 5.5. So, what I need to do is to make a virtual interface for my clients which set its bandwidth up to 1Mb/s shared to them, but my real bandwidth is 2Mb/s. Also, after that, I have two questions:
1. How to set this rate limitation to that interface? 2. How to edit this interface to let it work and route the client data to my ADSL router?
I'm already generate the virtual interface using webmin managment tool, so I need to set its rate and route data.
I'm configuring an HP Mini 110 (wireless BCM4313) to use it as a small Access Point (ad-hoc mode).
I want to make my configuration reboot friendly. With what I have right now, as soon as I reboot the laptop, the wireless interface configuration isn't correctly setup. I have to do "ifdown eth1; ifup eth1" manually.
Here is what I have in /etc/network/interfaces for the wireless interface code...
So the question is how can I avoid having to bring down and up the interface?
I found multiple sites explaining how to add IPs to a network interface as virtual interface like eth0:0. However I can add IPs to an interface as well using the ip command: ip a a 192.168.2.2/24 dev eth0 What I want to know is how I can make this persistent on rhel/centos.
I recently installed Ubuntu 10.04.1 LTS and have it set to dual-boot with windows 7 on my gateway tablet PC. Since installing, sometimes when I suspend or reboot, my wireless does not work. To be more clear - it is working fine, then I either suspend/reboot, then I come back and no wireless networks show up at all. I can still connect with ethernet cable though. I can solve it by rebooting multiple times (usually around 1-5 times) and then it (magically) seems to work again. I have also tried switching from network-manager to wicd, but the problem persists. With both network-manager and wicd, I've tried simulating a reboot for the wireless by using the command 'sudo modprobe -r iwl3945 && sudo modprobe iwl3945' (network-manager) and 'sudo /etc/init.d/wicd restart' (wicd), but these do not seem to work.
I can get connected to the Internet when I reboot the system, but the connection usually fails after within 10 mins. However, even then the network manager says it's connected. Never reconnect, manually or automatically.
Installed Fedora 12 in a 3.1.6 Virtual Box with Open Solaris as the host OS. All went well, with Guest Additions and was really nice. Until however I did a yum update and now it fails to boot, or at least get to a login box. how I can watch the boot information i.e. turn off the splash screen whilst it is coming up?
I'm having difficulty setting up my desired network infrastructure. Here's the situation:
I'm currently using an Ubuntu box as homeserver to do everything from sharing internet (via NAT), over DHCP & DNS to filesharing and even virtualisation.
However, since my machine is capable of virtualising Astaro Security Gateway properly, I would like to transfer and split up responsibilities.
I want to have my Astaro fully responsible for the internet and act as the gateway, and along with that disconnect my physical box from the internet and put it behind Astaro (basically making it just a member of the internal network).
The difficulty I'm having with this is that Astaro is running virtually on the physical box, and I can't seem to figure out how to configure the external interface. It needs to be up for Astaro to be able to use it, but it should not give the physical machine access to the external network.
I'm thinking I could set it to manual and not give it an ip address, but I'm not sure on this.
I've installed transmission-daemon on my headless Ubuntu 11.04 server and use the web interface to manage it. This is all working fine. However, after a reboot it seems that transmission daemon starts but the webinterface is unavailable. I get this in the syslog after a reboot:
Code: Jun 22 10:54:27 localhost transmission-daemon: Transmission 2.31 (12441) started (session.c:706) Jun 22 10:54:27 localhost transmission-daemon: RPC Server Adding address to whitelist: 192.168.*.* (rpc-server.c:805) Jun 22 10:54:27 localhost transmission-daemon: RPC Server Serving RPC and Web requests on port 127.0.0.1:9091/transmission/ (rpc-server.c:982) Jun 22 10:54:27 localhost transmission-daemon: RPC Server Whitelist enabled (rpc-server.c:986) Jun 22 10:54:27 localhost transmission-daemon: RPC Server Password required (rpc-server.c:989) Jun 22 10:54:27 localhost transmission-daemon: Port Forwarding Stopped (port-forwarding.c:181) Jun 22 10:54:27 localhost transmission-daemon: UDP Failed to set receive buffer: requested 4194304, got 262142 (tr-udp.c:75) .....
I need to ask about Virtual Interface, as I need to use my ethernet interface to act as two ethernet ports. As I need to give eth0 an IP address and give eth0.5 another ip address, and make some natting and other issues. Can I do that with the same interface?
I have a server with 14 IP's on eth0. I'm using virtual interfaces to handle the IP's, but the iptables don't seem to work on the virtual interface. It blocks ports that I want open. I'm not that great with iptables, I use what I have because it works for me, but as far as tweaking it, I'm pretty lost.
My iptables: # Simple Firewall configuration # # Set default policies -------- *filter :INPUT ACCEPT [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [0:0] # # Internal Networks ----------- #-A INPUT -s <private.class.C>/24 -d <private.class.C>/24 -i eth1 -j ACCEPT # # Loopback -------------------- -A INPUT -s 0/0 -d 0/0 -i lo -j ACCEPT # # Accept established connections -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # # Services -------------------- # # For SSH gateway -A INPUT -p tcp -s 0/0 -d 0/0 --dport 22 -m state --state NEW -j ACCEPT # # For SMTP gateway -A INPUT -p tcp -s 0/0 -d 0/0 --dport 25 -m state --state NEW -j ACCEPT # # For FTP server -A INPUT -p tcp -s 0/0 -d 0/0 --dport 20 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 21 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 53 -m state --state NEW -j ACCEPT # # HTTP services -A INPUT -p tcp -s 0/0 -d 0/0 --dport 80 -m state --state NEW -j ACCEPT # # HTTPS services -A INPUT -p tcp -s 0/0 -d 0/0 --dport 443 -m state --state NEW -j ACCEPT # # POP-3 services #-A INPUT -p tcp -s 0/0 -d 0/0 --dport 110 -m state --state NEW -j ACCEPT # # IMAP services -A INPUT -p tcp -s 0/0 -d 0/0 --dport 143 -m state --state NEW -j ACCEPT # #PLESK #-A INPUT -p tcp -s 0/0 -d 0/0 --dport 8443 -m state --state NEW -j ACCEPT # #Games -A INPUT -p tcp -s 0/0 -d 0/0 --dport 28960 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 28960 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 27666 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 27666 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 28961 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 28961 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 28962 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 28962 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 27015 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 27015 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 27016 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 27016 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 27017 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 27017 -m state --state NEW -j ACCEPT -A INPUT -p tcp -s 0/0 -d 0/0 --dport 27020 -m state --state NEW -j ACCEPT -A INPUT -p udp -s 0/0 -d 0/0 --dport 27020 -m state --state NEW -j ACCEPT
# Disallow fragmented packets -A INPUT -f -j DROP # # Log & Block broadcast packets -A INPUT -d 255.255.255.255/0.0.0.255 -j LOG -A INPUT -d 255.255.255.255/0.0.0.255 -j DROP # Log & Block multicast packets -A INPUT -d 188.8.131.52 -j LOG -A INPUT -d 184.108.40.206 -j DROP # # Log and drop all other incoming packets -A INPUT -j LOG -A INPUT -j DROP # COMMIT
I'm looking for a Postfix Management Web interface for user, domains, etc... The problem is I'm not using mysql for domains/users, so I can't use postfixadmin. I use virtual mailboxes as described here: [URL]
Basically all mappings are saved inside an /etc/postfix/vmaps file. The users/passwords files are in /home/vmail/passwd and /home/vmail/shadow. Users are in /home/vmail/$domain/$user
I searched for a web management tool that supports my config for weeks now, and can't seem to find any...
I just had an ATT Uverse RG installed. However my Smoothwall router that previously worked fine with the ADSL SpeedStream is no longer accepting an address assignment DHCP ip address from this new gateway. (3800HGV-B)Any thoughts ideas or experience working with this hardware? ATT only supports Windows and Mac
I have set 'ONBOOT=no' in interface script '/etc/sysconfig/network-scripts/ifcfg-eth0:2' but my interface bring up at boot time, what is the problem , I have checked it 3 or 4 diff os/machine but the same issue. Can anyone please help me to disable virtual IP's at boot time that network script make it up every boot time.
When I try to use Wubi to install Ubuntu it fails on reboot. It seems to run a script on reboot then nothing. I get a command prompt window with the script and the laptop seems to lock up. Only a hard re-boot will restart the system. I do get a dual screen boot prompt Windows/Umbutu but if I choose Umbutu, I get the same command prompt screen and the system is locked up again. Chosing Windows at the boot screen works fine.