On Mon, Dec 20, 2010 at 3:20 PM, brett <brett.mahar@gmail.com> wrote:
quoted text > Hi @misc,
> I have a Beagleboard-xM with Ansgtrom Linux and a PC running OpenBSD 4.8,
AMD64 version. My PC is connected via TP-Link wifi to household router (my
otus0 internet address for this connection is 192.168.1.101). The beagleboard
is connected to the PC via ethernet.
quoted text > On the Beagle I configured the ethernet device (which shows up as usb0 on
Angstrom):
quoted text >
> # ifconfig usb0 inet 192.168.10.10 netmask 255.255.255.0
> # route add default gw 192.168.10.12 netmask 255.255.255.0 dev usb0
> Also, in /etc/resolv.conf I added nameservers 203.12.160.35 & 203.12.160.36
>
> On the OpenBSD PC I created a bridge:
>
> # ifconfig nfe0 inet 192.168.10.12 netmask 255.255.255.0
> # ifconfig bridge0 create
> In /etc/hostname.nfe0 is the single word: up
> In /etc/hostname.otus0 is the single word: up
> In /etc/bridgename.bridge0 is: add nfe0 add otus0 up
> In /etc/sysctl.conf I uncommented: net.inet.ip.forwarding=1
>
> I have also tried uncommenting net.inet6.ip6.mforwarding=1 but it did not
help.
quoted text >
> I can ping 192.168.10.12 from the Beagle, and 192.168.10.10 from the PC, but
I cannot ping 192.168.1.101 (the PC's wifi connection from the Beagle,
"network is unreachable").
quoted text > The first time I set this up (a few days ago), I could ping the outside
world from the Beagle running Angstrom. I loaded Ubuntu onto the Beagle tried
the setup again, and could not reach the outside internet. Now I've gone back
to Angstrom and cannot get the connection to come back up. I am not sure why
it worked before and not now but it seems like my OpenBSD bridge0 is not
working. When it was working, typing ifconfig (as below) I seem to remember
the output for bridge0 was longer than it is now, but am not sure. Probably it
is some simple forgotten command but I do not know what it could be.
quoted text >
> Thanks for any help!
> Brett.
>
> More detailed output:
>
> ------------------------------------------------------------------------
> On the OpenBSD pc:
>
> # ifconfig nfe0 inet 192.168.10.12 netmask 255.255.255.0
> # ifconfig bridge0 create
> # ifconfig
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33160
> priority: 0
> groups: lo
> inet 127.0.0.1 netmask 0xff000000
> inet6 ::1 prefixlen 128
> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
> re0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
> lladdr c8:3a:35:d4:64:2b
> priority: 0
> media: Ethernet autoselect (10baseT half-duplex)
> status: no carrier
> nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> lladdr 00:25:11:1e:44:93
> priority: 0
> media: Ethernet autoselect (100baseTX full-duplex)
> status: active
> inet6 fe80::225:11ff:fe1e:4493%nfe0 prefixlen 64 scopeid 0x2
> inet 192.168.10.12 netmask 0xffffff00 broadcast 192.168.10.255
> enc0: flags=0<>
> priority: 0
> groups: enc
> status: active
> pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33160
> priority: 0
> groups: pflog
> otus0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> lladdr d8:5d:4c:8e:b8:29
> priority: 4
> groups: wlan egress
> media: IEEE802.11 autoselect (OFDM54 mode 11g)
> status: active
> ieee80211: nwid linksys_hd chan 3 bssid 00:25:9c:83:5f:94 34dB wpapsk
0x075ce6504c26846e32c144a71a0f7840988b9a8e9d4a7593243d4dfae845032e wpaprotos
wpa1,wpa2 wpaakms psk wpaciphers tkip,ccmp wpagroupcipher tkip
quoted text > inet6 fe80::da5d:4cff:fe8e:b829%otus0 prefixlen 64 scopeid 0x7
> inet 192.168.1.101 netmask 0xffffff00 broadcast 192.168.1.255
> bridge0: flags=0<>
> groups: bridge
> priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto
rstp
quoted text >
-----------------------------------------------------------------------------
quoted text > # route show
> Routing tables
>
> Internet:
> Destination Gateway Flags Refs Use Mtu Prio
Iface
quoted text > default 192-168-1-1.tpgi.c UGS 36 996265 - 12
otus0
quoted text > CPE-58-169-237-189 192-168-1-1.tpgi.c UGHD 1 996074 - L 56
otus0
quoted text > 124-168-64-155.dyn 192-168-1-1.tpgi.c UGHD 1 991997 - L 56
otus0
quoted text > loopback localhost UGRS 0 0 33160 8 lo0
> localhost localhost UH 2 66 33160 4 lo0
> 192.168.1/24 link#7 UC 1 0 - 4
otus0
quoted text > 192-168-1-1.tpgi.c 00:25:9c:83:5f:93 UHLc 3 0 - 4
otus0
quoted text > 192-168-1-101.tpgi localhost UGHS 0 0 33160 8 lo0
> 192.168.10/24 link#2 UC 1 0 - 4
nfe0
quoted text > 192.168.10.10 32:45:70:13:d5:3e UHLc 0 6 - 4
nfe0
quoted text > BASE-ADDRESS.MCAST localhost URS 0 3 33160 8 lo0
>
> Internet6:
> Destination Gateway Flags Refs Use Mtu Prio
Iface
quoted text > ::/104 localhost UGRS 0 0 - 8 lo0
> ::/96 localhost UGRS 0 0 - 8 lo0
> localhost localhost UH 14 0 33160 4 lo0
> ::127.0.0.0/104 localhost UGRS 0 0 - 8 lo0
> ::224.0.0.0/100 localhost UGRS 0 0 - 8 lo0
> ::255.0.0.0/104 localhost UGRS 0 0 - 8 lo0
> ::ffff:0.0.0.0/96 localhost UGRS 0 0 - 8 lo0
> 2002::/24 localhost UGRS 0 0 - 8 lo0
> 2002:7f00::/24 localhost UGRS 0 0 - 8 lo0
> 2002:e000::/20 localhost UGRS 0 0 - 8 lo0
> 2002:ff00::/24 localhost UGRS 0 0 - 8 lo0
> fe80::/10 localhost UGRS 1 0 - 8 lo0
> fe80::%nfe0/64 link#2 UC 0 0 - 4
nfe0
quoted text > fe80::225:11ff:fe1 00:25:11:1e:44:93 HL 0 0 - 4 lo0
> fe80::%lo0/64 fe80::1%lo0 U 0 0 - 4 lo0
> fe80::1%lo0 link#4 UHL 0 0 - 4 lo0
> fe80::%otus0/64 link#7 UC 0 0 - 4
otus0
quoted text > fe80::da5d:4cff:fe d8:5d:4c:8e:b8:29 UHL 0 0 - 4 lo0
> fec0::/10 localhost UGRS 0 0 - 8 lo0
> ff01::/16 localhost UGRS 0 0 - 8 lo0
> ff01::%nfe0/32 link#2 UC 0 0 - 4
nfe0
quoted text > ff01::%lo0/32 localhost UC 0 0 - 4 lo0
> ff01::%otus0/32 link#7 UC 0 0 - 4
otus0
quoted text > ff02::/16 localhost UGRS 1 0 - 8 lo0
> ff02::%nfe0/32 link#2 UC 0 0 - 4
nfe0
quoted text > ff02::%lo0/32 localhost UC 0 0 - 4 lo0
> ff02::%otus0/32 link#7 UC 0 0 - 4
otus0
quoted text >
-----------------------------------------------------------------------------
--
quoted text >
> On the Beagleboard running Angstrom:
> root@beagleboard:~# ifconfig usb0 inet 192.168.10.10 netmask 255.255.255.0
> root@beagleboard:~# [ 95.218231] usb0: link up, 100Mbps, full-duplex, lpa
0x41E1
quoted text >
> root@beagleboard:~# route add default gw 192.168.10.12 netmask 255.255.255.0
dev
quoted text > usb0
> root@beagleboard:~# route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
Iface
quoted text > default 192.168.10.12 255.255.255.0 UG 0 0 0
usb0
quoted text > 192.168.10.0 * 255.255.255.0 U 0 0 0
usb0
quoted text >
> root@beagleboard:~# ping 192.168.10.12
> PING 192.168.10.12 (192.168.10.12) 56(84) bytes of data.
> 64 bytes from 192.168.10.12: icmp_seq=1 ttl=255 time=6.89 ms
> 64 bytes from 192.168.10.12: icmp_seq=2 ttl=255 time=0.427 ms
> 64 bytes from 192.168.10.12: icmp_seq=3 ttl=255 time=0.397 ms
> ^C
> --- 192.168.10.12 ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time 1999ms
> rtt min/avg/max/mdev = 0.397/2.574/6.898/3.057 ms
>
> root@beagleboard:~# ping 192.168.1.101
> connect: Network is unreachable
> root@beagleboard:~# route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
Iface
quoted text > default 192.168.10.12 255.255.255.0 UG 0 0 0
usb0
quoted text > 192.168.10.0 * 255.255.255.0 U 0 0 0
usb0
quoted text >
>
-----------------------------------------------------------------------------
-----
quoted text >
>
If a DHCP server is on the 192.168.1.0/24 block, you could configure
your beagleboard to get an address through DHCP, since you set up the
bridge.
If you're using a bridge, you don't need to set
"net.inet.ip.forwarding" to 1, as you aren't actually routing packets,
you're bridging them.
(see
http://www.openbsd.org/faq/faq6.html#Bridge )
--AlanCF
