Cannot access network when nic binding

CourtK

I have a Centos 6.3 server with NIC binding. The server can ping the local network and WAN but cannot ping the network on the other side of an OpenVPN tunnel. If I don't use nic binding the server can ping the other network. How can I set up the CentOS server to use NIC binding and allow it to access the network on the other side of the OpenVPN? I did not setup the OpenVPN nor am I familiar with it. I don't even know if OpenVPN is causing the access issue, but it seems probable.

Here is my ifconfig on ther Centos server
bond0 Link encap:Ethernet HWaddr 00:25:90:A5:45:01
inet addr:192.100.143.68 Bcast:192.100.143.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:fea5:4501/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:188604 errors:0 dropped:0 overruns:0 frame:0
TX packets:64483 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:17164529 (16.3 MiB) TX bytes:3935510 (3.7 MiB)

eth0 Link encap:Ethernet HWaddr 00:25:90:A5:45:00
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:70903 errors:0 dropped:0 overruns:0 frame:0
TX packets:32442 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:6247291 (5.9 MiB) TX bytes:1980668 (1.8 MiB)
Interrupt:20 Memory:dfb00000-dfb20000

eth1 Link encap:Ethernet HWaddr 00:25:90:A5:45:01
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:117701 errors:0 dropped:0 overruns:0 frame:0
TX packets:32041 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10917238 (10.4 MiB) TX bytes:1954842 (1.8 MiB)
Interrupt:16 Memory:df900000-df920000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2256 (2.2 KiB) TX bytes:2256 (2.2 KiB)

Thank you for your help.

maikcat

hi there,

just curious,
please post your openvpn server config...

is it routing or bridging setup?

Michael.

CourtK

How can I tell if it is routing or bridging?

more /etc/openvpn/server.conf
local 192.100.143.248
port 1194
proto udp
dev tun
ca keys/ca.crt
cert keys/vpnsrv.crt
key keys/vpnsrv.key
dh keys/dh1024.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "route 192.100.143.0 255.255.255.0"
client-config-dir ccd
route 192.168.20.0 255.255.255.0
keepalive 10 120
comp-lzo
user nobody
group nogroup
persist-key
persist-tun
verb 3

CourtK

The route table on the Centos server was not configured to use a different gateway for the network on the otherside of the VPN tunnel. I forgot that the DHCP clients get the routing table from the DHCP server, but since my bond0 was static I needed to add the route manually. When I wasn't bonding the nics I was using DHCP, which had the correct routes added automatically. All is working now. Thanks for your help.

maikcat

but since my bond0 was static I needed to add the route manually. When I wasn't bonding the nics I was using DHCP, which had the correct routes added automatically. All is working now.

:ugeek: :ugeek: :ugeek: :ugeek: :ugeek: :ugeek:

try NOT to use local directive when using dhcp....

Michael.