CARP & bridge

[Sebastiaan van Erk]

Hi,





        options=98<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
        ether 00:0c:29:61:2a:55
        inet 10.0.80.77 netmask 0xffffff00 broadcast 10.0.80.255
        media: Ethernet autoselect (1000baseTX <full-duplex>)
        status: active

        ether 9a:6a:9f:b2:65:da
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 11 priority 128 path cost 2000000
        member: em1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 2 priority 128 path cost 20000

        ether 00:bd:48:03:00:00
        Opened by PID 24616
carp1: flags=49<UP,LOOPBACK,RUNNING> metric 0 mtu 1500
        inet 10.0.80.74 netmask 0xffffff00
        carp: MASTER vhid 2 advbase 1 advskew 0




# tcpdump -i tap0 -ln
11:29:13.637048 arp who-has 10.0.80.74 tell 10.0.80.6



This is all on FreeBSD 7.1 with OpenVPN 2.0.6 (both client and server).

Regards,
Sebastiaan

I have a bridged OpenVPN setup where the OpenVPN tap0 driver is bridged (via bridge0) to the physical em1 interface, which has a VIP via a carp1 interface: em1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 The problem I have is that when I ping the VIP from a VPN client (on tap0), the server receives arp requests for the VIP on tap0, but it does not respond to them: Is there any way to get the server to respond to arp requests on tap0 for the VIP?

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