possibly bridge related problem

Tue Aug 19 09:56:34 UTC 2008

2008/8/19 Ganbold <ganbold at micom.mng.net>:
> Hi,
>
> I have strange network problem on my laptop.
> I can't make connection to my desktop(192.168.0.18) from my laptop.
> However I can ping to other addresses from my laptop.
> I can't ping and make connection to my laptop from my desktop either.
>
> On the laptop I have bridge created at boot time.
> When I destroy bridge0 I can ping and make connection to my desktop.
> Is this known problem? If not where should I look for the problem?
> Or am I doing something wrong?
>
> ...
> devil# uname -an FreeBSD devil.micom.mng.net 7.0-STABLE FreeBSD 7.0-STABLE
> #8: Tue Aug 19 15:29:26 ULAT 2008
> tsgan at devil.micom.mng.net:/usr/obj/usr/src/sys/DEVIL  i386
> devil# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1): 56 data bytes
> 64 bytes from 192.168.0.1: icmp_seq=0 ttl=255 time=0.920 ms
> 64 bytes from 192.168.0.1: icmp_seq=1 ttl=255 time=1.788 ms
> 64 bytes from 192.168.0.1: icmp_seq=2 ttl=255 time=1.130 ms
> ^C
> --- 192.168.0.1 ping statistics ---
> 3 packets transmitted, 3 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 0.920/1.279/1.788/0.370 ms
>
> devil# ping 192.168.0.18 PING 192.168.0.18 (192.168.0.18): 56 data bytes
> ^C
> --- 192.168.0.18 ping statistics ---
> 4 packets transmitted, 0 packets received, 100.0% packet loss
>
> devil# ifconfig -a bge0:
> flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>   options=98<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
>   ether 00:14:22:fb:32:a6
>   inet 192.168.0.35 netmask 0xffffff00 broadcast 192.168.0.255
>   media: Ethernet autoselect (1000baseTX <full-duplex>)
>   status: active
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>   inet 127.0.0.1 netmask 0xff000000 bridge0:
> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>   ether 00:14:22:fb:32:a6
>   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 4 priority 128 path cost 2000000
>   member: bge0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>           ifmaxaddr 0 port 1 priority 128 path cost 20000
> tap0: flags=8902<BROADCAST,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>   ether 00:bd:4b:1b:00:00
> tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1500
>   inet 192.168.10.34 --> 192.168.10.33 netmask 0xffffffff   Opened by PID
> 802
>
> devil# kldstat Id Refs Address    Size     Name
> 1   22 0xc0400000 701a64   kernel
> 2    1 0xc0b02000 5844     if_tap.ko
> 3    1 0xc0b08000 15524    snd_hda.ko
> 4    2 0xc0b1e000 52a08    sound.ko
> 5    2 0xc0b71000 10ebc    drm.ko
> 6    1 0xc0b82000 71c4     i915.ko
> 7    1 0xc0b8a000 1fe68    kqemu.ko
> 8    1 0xc0baa000 b8c8     aio.ko
> 9    1 0xc0bb6000 6b3d0    acpi.ko
> 10    1 0xc433b000 9000     if_bridge.ko
> 11    1 0xc4344000 6000     bridgestp.ko
> 12    2 0xc44c2000 d000     ipfw.ko
> 13    1 0xc44fb000 4000     ipdivert.ko
> 14    1 0xc452a000 22000    linux.ko
> 15    1 0xc45a6000 e000     fuse.ko
>
> devil# more /etc/rc.conf
> cloned_interfaces="bridge0 tap0"
> firewall_enable="YES"
> firewall_quiet="NO"
> firewall_script="/etc/rc.firewall"
> firewall_type="open"
> gateway_enable="YES"
> hostname="devil.micom.mng.net"
>
> ifconfig_bge0="DHCP"
> ifconfig_bridge0="addm bge0 addm tap0 up"
> inetd_enable="YES"
>
> natd_enable="YES"                # Enable natd (if firewall_enable == YES).
> natd_interface="bge0"               # Public interface or IPaddress to use.
> openvpn_enable="YES"
> openvpn_if="tun"
>
>
> devil# ipfw show 00050 224 19723 divert 8668 ip4 from any to any via bge0
> 00100   4   200 allow ip from any to any via lo0
> 00200   0     0 deny ip from any to 127.0.0.0/8
> 00300   0     0 deny ip from 127.0.0.0/8 to any
> 65000 383 33187 allow ip from any to any
> 65535   0     0 deny ip from any to any
>
> devil# netstat -rn Routing tables
>
> Internet:
> Destination        Gateway            Flags    Refs      Use  Netif Expire
> default            192.168.0.1        UGS         0      205   bge0
> 127.0.0.1          127.0.0.1          UH          0        2    lo0
> 192.168.0.0/24     link#1             UC          0        0   bge0
> 192.168.0.1        00:e0:29:3b:5a:b0  UHLW        2       10   bge0   1099
> 192.168.10.0/24    192.168.10.33      UGS         0        0   tun0
> 192.168.10.33      192.168.10.34      UH          1        0   tun0
>

Hi,

I guess you got that buggy window in 7-stable between [1] and the fix,
that would come [2] in 7-stable in a few days.

[1] http://svn.freebsd.org/viewvc/base?view=revision&revision=180364
[2] http://svn.freebsd.org/viewvc/base?view=revision&revision=181824

wbr,
pluknet