| View previous topic :: View next topic |
| Author |
Message |
JohnnyGr
n00b
Joined: 22 Mar 2005
Posts: 5
|
 Posted: Thu Mar 06, 2008 9:01 am Post subject: Problems creating 2 tap devices and getting dhcp addresses |
 |
|
Hi, Im having some troubles when creating two tap devices and bridging them with eth0 wich is my internet interface.
The following is what im trying to accomplish:
| Code: |
/---- tap0 (dhcp) --- iptables forward to eth1 --- Lan
/
ISP --- eth0 (bridge with tap0/1)
\
\---- tap1 (dhcp) --- iptables forward to eth2 --- DMZ
|
My config looks like this:
| Code: |
tuntap_tap0="tap"
tuntap_tap1="tap"
mac_tap0="random-samekind"
mac_tap1="random-samekind"
config_eth0=( "null" )
bridge_br0="eth0 tap0 tap1"
config_br0=( "null" )
config_tap0=( "dhcp" )
config_tap1=( "dhcp" )
dhcp_tap1="release nodns nontp nonis"
RC_NEED_br0="net.eth0 net.tap0 net.tap1"
config_eth1=( "192.168.xx1.xxx netmask 255.255.255.0" )
config_eth2=( "192.168.xx2.xxx netmask 255.255.255.0" )
|
AFAIK this is the proper way to do it, but when requesting an ip and running tcpdump on eth0 i cant see any dhcp requests going out
if i tcpdump och tap1 for example i can see the dhcp requests on that interface.
If anyone have any idea on how to make things work i would appriciate any help i can get... Thank you. |
|
| Back to top |
|
 |
sf_alpha
Tux's lil' helper
Joined: 19 Sep 2002
Posts: 136
Location: Bangkok, TH
|
| Posted: Thu Mar 06, 2008 10:11 am Post subject: |
|
|
I quite not understand how you forward tap1 to eth1 using iptables.
But you can only have DHCP enable on bridge interfaces (br0) not interfaces participating bridge.
_________________
Gentoo Mirrors in Thailand (and AP)
http://gentoo.in.th |
|
| Back to top |
|
|
JohnnyGr
n00b
Joined: 22 Mar 2005
Posts: 5
|
| Posted: Thu Mar 06, 2008 6:35 pm Post subject: |
|
|
Oh? After what i have read i was under the impression that the tap interfaces was virtual network adapters, and the bridge was a way to tell them wich interface they were connected to.
And by being virtual network adapters i thought i could just NAT traffic from tap0 or tap1 to any interface i wanted.
But since that doesnt seem to be the case, do you have any other suggestion on what i should look for to accomplish what i need?
Thank you. |
|
| Back to top |
|
|
|
Networking & Security
