I am trying to use if_bridge with OpenVPN and I am having some trouble with basic bridging.
I am testing it on my laptop with has an ath interface which uses WPA to a Linksys WRT54G and then to a FreeBSD gateway. I have tried both configuring ath0 with an IP as well as bridge0 but neither work. It seems that none of the packets from ath0 appear on bridge0. ie.. ath0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 ether 00:90:96:c1:90:54 media: IEEE 802.11 Wireless Ethernet autoselect (OFDM/48Mbps) status: associated ssid dons channel 6 bssid 00:13:10:9b:52:d4 authmode WPA privacy ON deftxkey UNDEF TKIP 2:128-bit txpowmax 35 protmode CTS burst roaming MANUAL bintval 100 bridge0: flags=8143<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 inet 10.0.2.102 netmask 0xff000000 broadcast 10.255.255.255 ether ac:de:48:67:74:b6 priority 32768 hellotime 2 fwddelay 15 maxage 20 member: ath0 flags=7<LEARNING,DISCOVER,STP> port 4 priority 128 path cost 55 blocking When I run tcpdump.. [inchoate 20:35] ~ >sudo tcpdump -ni bridge0 Password: tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on bridge0, link-type EN10MB (Ethernet), capture size 96 bytes 20:35:30.586751 arp who-has 10.0.2.7 tell 10.0.2.102 [etc] Whereas a tcpdump on ath0 shows no ARP packets.. I did the following to configure it.. killall devd [to stop it running dhclient] /etc/rc.d/netif stop ath0 ifconfig bridge0 create wpa_supplicant -i ath0 -c /etc/wpa_supplicant.conf ifconfig bridge0 create ifconfig bridge0 addm ath0 dhclient bridge0 I see the DHCPDISCOVER requests when I tcpdump bridge0 but they don't appear on ath0. If I run dhclient on ath0 it works fine for normal traffic but I don't see any ath0 traffic on bridge0. If I create a tap interface (eg cat /dev/tap0) and add it to the bridge (ifconfig bridge0 addm tap0) it sees no packets either. bridge0 appears to learn no addresses.. [inchoate 20:46] ~ >ifconfig bridge0 addr [inchoate 20:46] ~ > Am I missing something obvious? (This is on -current as of 27 Mar) PS please CC me as I am not subscribed to the list. Thanks. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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