ifconfig: BRDGADD vr1: Invalid argument

[Randy Bush]

ok, i have bridging working (kernel/userland version skew likely culprit, thanks max),
except that ath0 does not seem to completely bridge. bms may have warned me in saying

> although you won't get the 802.11 frames bridged.

---

the problem:
  o hosts on vr1, vr2, and vr3 get dhcp addresses and can see the world
  o host on ath0 can not get dhcp address
    - soekris sees dhcp request and responds
    - response not seen by anyone on wireless
    - tcpdump says dhcpd is sending the response (see below)

the plan:

                 Soekris 5501
            .-----------------------.
            |                       |
            |              b ---ath0|
            |              r        |  LAN
 external   |              i --- vr1|
------------|vr0---NAT---- d        |  DHCP
   WAN      |              g --- vr2|
            |              e        |  Clients
            |              0 --- vr3|
            |                       |
            `-----------------------'

vr0 gets address via DHCP from external link

bridge0 is hard coded as 192.168.0.1/24

dhcpd runs on bridge0 for the range 192.168.0.100-199 to feed the LAN.

---

from /etc/rc.conf:

firewall_enable=YES             # Set to YES to enable firewall functionality
firewall_type="/etc/ipfw.rules" # Firewall type (see /etc/rc.firewall)
firewall_quiet=YES              # Set to YES to suppress rule display
firewall_logging=YES            # Set to YES to enable events logging

ifconfig_vr0=DHCP
cloned_interfaces=bridge0
ifconfig_bridge0="192.168.0.1 addm vr1 addm vr2 addm vr3 up addm ath0"
ifconfig_vr1=up
ifconfig_vr2=up
ifconfig_vr3=up
ifconfig_ath0="channel 4 ssid rgnet-aden wep wepkey x mediaopt hostap up"

gateway_enable=YES

---

from /etc/sysctl.conf:

# nat
net.inet.ip.fw.one_pass=0

# bridging
#net.link.ether.ipfw=1  -- uncomment and connectivity on vr0 is lost
net.link.bridge.ipfw=1
net.link.bridge.ipfw_arp=1

# ath bridging
net.inet.ip.check_interface=0

---

# ifconfig -a
vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=b<RXCSUM,TXCSUM,VLAN_MTU>
        ether 00:00:24:c8:b3:28
        inet 666.42.86.171 netmask 0xffffffc0 broadcast 666.42.86.191
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
vr1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=9<RXCSUM,VLAN_MTU>
        ether 00:00:24:c8:b3:29
        media: Ethernet autoselect (none)
        status: no carrier
vr2: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=9<RXCSUM,VLAN_MTU>
        ether 00:00:24:c8:b3:2a
        media: Ethernet autoselect (none)
        status: no carrier
vr3: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=9<RXCSUM,VLAN_MTU>
        ether 00:00:24:c8:b3:2b
        media: Ethernet autoselect (none)
        status: no carrier
ath0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:0b:6b:83:59:25
        media: IEEE 802.11 Wireless Ethernet autoselect <hostap> (autoselect <hostap>)
        status: associated
        ssid rgnet-aden channel 4 (2427 Mhz 11g) bssid 00:0b:6b:83:59:25
        authmode OPEN privacy ON deftxkey UNDEF wepkey 1:104-bit txpower 31.5
        scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250 roam:rssi11g 7
        roam:rate11g 5 protmode CTS burst dtimperiod 1
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x6
        inet6 ::1 prefixlen 128
        inet 127.0.0.1 netmask 0xff000000
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether c6:75:12:20:d9:c2
        inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
        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: ath0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 5 priority 128 path cost 370370
        member: vr3 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 4 priority 128 path cost 200000
        member: vr2 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 3 priority 128 path cost 55
        member: vr1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 2 priority 128 path cost 55

---

the tcpdump -i ath0

03:48:29.717236 00:18:de:21:76:c9 (oui Unknown) > Broadcast Null Supervisory, Receiver not Ready, rcv seq 64, Flags [Poll], length 6
03:48:29.717244 00:18:de:21:76:c9 (oui Unknown) > Broadcast Null Supervisory, Receiver not Ready, rcv seq 64, Flags [Poll], length 6
03:48:30.192604 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:18:de:21:76:c9 (oui Unknown), length 300
03:48:30.192613 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:18:de:21:76:c9 (oui Unknown), length 300
03:48:30.193467 IP 192.168.0.1.bootps > test.psg.com.bootpc: BOOTP/DHCP, Reply, length 300
03:48:33.192787 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:18:de:21:76:c9 (oui Unknown), length 300
03:48:33.192799 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:18:de:21:76:c9 (oui Unknown), length 300
03:48:33.194067 IP 192.168.0.1.bootps > test.psg.com.bootpc: BOOTP/DHCP, Reply, length 300

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randy