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 Post subject: Bridging issue (ACL, client 1.7.0)
PostPosted: Sat Oct 26, 2013 3:57 pm 

Joined: Sat Oct 26, 2013 3:54 pm
Posts: 1
I am trying to set up bridging over neorouter vpn.
Client: NeoRouter Free [Version],

ACL is not disabling after adding "NetworkBridge=1" to /usr/local/ZebraNetworkSystems/NeoRouter/Feature.ini .

As a result no L3 traffic can pass through VPN except traffic sourced from addresses leased by neorouter server.

In all cases i use following config:
DHCP Subnet:
DHCP Netmask:

router 1: leased address
router 2: leased address

in bridging cases bridge look like:
bridge br0
interface eth0 promisc
interface nrtap promisc

Case 1: changing address on nrtap to another address from same subnet

root@router2:~# ip addr show nrtap | grep "inet "
inet brd scope global nrtap

PING ( 56(84) bytes of data.
64 bytes from icmp_req=1 ttl=64 time=2.27 ms

--- ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 2.274/2.274/2.274/0.000 ms


root@router2:~# ip addr del dev nrtap
root@router2:~# ip addr add dev nrtap
root@router2:~# ping
PING ( 56(84) bytes of data.
--- ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1006ms

no l3 traffic can pass.

but L2 can

root@router2:~# arping -I nrtap
ARPING from nrtap
Unicast reply from [7E:2F:50:EE:8F:AA] 3.329ms
Unicast reply from [7E:2F:50:EE:8F:AA] 2.613ms
Unicast reply from [7E:2F:50:EE:8F:AA] 2.779ms

Case 2: doing same thing on desktops, connected to bridged ethernet interfaces.
if i deattach leased addresses from nrtap and attach em to separate machines - all's fine
if addresses are changed to other ones, that are not leased by dhcp L3 fail, L2 - OK.

Case 3: forwarding traffic from separate subnet over bridge.
Same result.

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