This situation with pings is really strange...But in my case the solution was much easier . CentOS 6 was installed on VmWare virtual machine and the problem was in it network device configuration. The most hardly thing was to guess to that. After this I quickly found a solution:
http://www.jeremycole.com/blog/2010/03/11/openvpn-bridge-under-vmware-esxi/
So, to my experience, the CentOS(or RedHat) work correctly, and may be you should try to look for errors in somewhere else (as in my case it was VmWare configuration).
Hello,
I did not have read this issue before, but I have seen this problem also. Whenever I restart the bridge (with tap0 interfaces also) I have to make a first ping to the physical interface related to the tap0 module. I also ping another machine on the same physical network. After that, I am able to reach the bridged one.
Extrange behaviour but this works for me in this way now.
I look forward RedHat fixed this bug soon.
El 07/11/11 06:39, 唐建伟 escribió:
thank you very much for your follow up. wish to get good news from you soon.
On Sat, Nov 5, 2011 at 12:26 AM, Минтаиров Михаилmikxalich@yandex.ruwrote:
28.09.2011, 04:58, "唐建伟"myhnet@gmail.com: Hello, I didn't find what to answer to you mounth ago. But now I also have an installation of centos 6 (at past I used centos 5.7) , and I have the same problems as you. First of all, did you find any solutions?
I only found that the problem is in br0 device. I can't guess why but it not recive ARP REPLY packets.
tcpdump on all devices (tap0, eth1, br0) give me the same:
20:12:22.012270 ARP, Request who-has 192.168.11.3 tell 192.168.11.33, length 28 20:12:23.027897 ARP, Request who-has 192.168.11.3 tell 192.168.11.33, length 28 20:12:24.027951 ARP, Request who-has 192.168.11.3 tell 192.168.11.33, length 28 //192.158.11.33 is remoute PC ip-address, and 192.168.11.3 is one of my local hosts//
and no APR REPLY.
Intresting that on other hand I have the same configs files on Centos 5.7. and everything work perfectly.
no, i removed the commands you mentioned, but it still doesn't work.
Best Regards Tang Jianwei
On Tue, Sep 27, 2011 at 6:01 PM, Минтаиров Михаил<mikxalich@yandex.ru wrote:
I can't remember a reason, but at one moment I stop to use "openvpn --mktun --dev [dev name]" command. May be it's becouse openvpn create
tap0
by it self. So try to comment this lines:
for t in $tap; do openvpn --mktun --dev $t done
then restart a network, after then start openvpn and after it start
bridge
script
openvpn configure file
*port 1194 proto udp dev tap0 ca ca.crt cert VPN_Server.crt key VPN_Server.key # This file should be kept secret dh dh1024.pem server-bridge 192.168.119.1 255.255.255.0 192.168.119.221
192.168.119.225
keepalive 10 120 comp-lzo user nobody group nobody persist-key persist-tun status openvpn-status.log log-append /var/log/openvpn.log verb 3 mute 20 *
the script for bring up the bridge *# Define Bridge Interface br="br0"
# Define list of TAP interfaces to be bridged, # for example tap="tap0 tap1 tap2". tap="tap0"
# Define physical ethernet interface to be bridged # with TAP interface(s) above. eth="eth1" eth_ip="192.168.119.1" eth_netmask="255.255.255.0" eth_broadcast="192.168.119.255"
for t in $tap; do openvpn --mktun --dev $t done
brctl addbr $br brctl addif $br $eth
for t in $tap; do brctl addif $br $t done
for t in $tap; do ifconfig $t 0.0.0.0 promisc up done
ifconfig $eth 0.0.0.0 promisc up
ifconfig $br $eth_ip netmask $eth_netmask broadcast $eth_broadcast*
On Tue, Sep 27, 2011 at 5:20 PM, Минтаиров Михаил<
mikxalich@yandex.ru
wrote: > Hm... It's very hard to guess without config files. Can you post
your
> server and client openvpn configs... and also can your show a br0
creation
> commands? > > 27.09.2011, 12:01, "唐建伟"myhnet@gmail.com: >> Hi >> >> no, i don't think so. anyway, i can and only can the vpn server
from
the
>> remote hosts. >> >> Best Regards >> Tang Jianwei >> >> On Tue, Sep 27, 2011 at 3:59 PM, Минтаиров Михаил<
mikxalich@yandex.ru
>> wrote: >>> So, something stop packets from remote hosts. May be firewall on
remote
>>> PC...? and can you run tcpdump on same remote host, to check that
it's
> tap0 >>> device. >>> >>> 27.09.2011, 11:06, "唐建伟"myhnet@gmail.com: >>>> Hi >>>> >>>> the routing table in the remote hosts are OK. "tcpdump -n -i
[device
>>> name]" >>>> cannot capture any packages from remote. no mater br0 nor tap0. >>>> >>>> Best Regards >>>> Tang Jianwei >>>> >>>> On Tue, Sep 27, 2011 at 2:44 PM, Минтаиров Михаил< > mikxalich@yandex.ru >>>> wrote: >>>>> 27.09.2011, 09:52, "唐建伟"myhnet@gmail.com: >>>>>> Hi all, >>>>>> >>>>>> I just intalled openvpn + bridge in CentOS 6, but i get
strange
>>> problems: >>>>>> the remote PCs cannot get the local PCs' MACs and also, the
local
> PCs >>>>>> cannot get the remote PCs' MACs >>>>>> >>>>>> but when i run "brctl showmacs br0" it will list all the
MACs
and
>>> also " >>>>>> brctl show" will show that all the correct adapters are in
br0
>>>>>> SELinux disabled >>>>>> >>>>>> any ideas? >>>>> First of all you should check routing table of remote hosts.
If
>>> everything >>>>> is correct, try to monitor br0, and other devises(ethX) by
"tcpdump
> -n >>> -i >>>>> [device name]". >>>>> _______________________________________________ >>>>> CentOS mailing list >>>>> CentOS@centos.org >>>>> http://lists.centos.org/mailman/listinfo/centos >>>> -- >>>> Tang Jianwei >>>> System Administrator >>>> _______________________________________________ >>>> CentOS mailing list >>>> CentOS@centos.org >>>> http://lists.centos.org/mailman/listinfo/centos >>> _______________________________________________ >>> CentOS mailing list >>> CentOS@centos.org >>> http://lists.centos.org/mailman/listinfo/centos >> -- >> Tang Jianwei >> System Administrator >> _______________________________________________ >> CentOS mailing list >> CentOS@centos.org >> http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- Tang Jianwei System Administrator _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
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