On Thu, Jan 08, 2004 at 10:30:47PM -0700, Barak Pearlmutter wrote: > I have a WAP which serves DHCP requests. > I have a laptop with an 802.11b interface. The laptop connects > to the WAP and gets its IP address via DHCP. > I have another device (Grandstream BudgeTone-101, a non-wireless SIP > phone) which uses DHCP as it boots. > The laptop has an otherwise-unused wired ethernet interface. > I would like to use the laptop as a bridge, thus allowing the SIP > phone to plug into the laptop while I'm laying in bed. > > $ grep -A9 br0 /etc/network/interfaces > > iface br0 inet dhcp > pre-up egrep --silent '^3c59x' /proc/modules || modprobe 3c59x > pre-up /etc/init.d/pcmcia start || true > pre-up cardctl insert || true > pre-up ifconfig eth0 down || true > pre-up ifconfig eth1 down || true > bridge_ports all > bridge_maxwait 5 > bridge_stp on > > The bridge seems to work fine, except that the SIP phone never gets > its IP address. Ie DHCP does not seem to completely cross the bridge. > > Any hints?
Not really hints, but I've seen this on a bridge running iptables. I assumed it was the iptables rules not letting DHCP through. I didn't go any further as I was always going to put a DHCP server on the other side of the bridge anyway. Perhaps you could run ethereal and grab a trace to find out if any DHCP gets across at all. But it's strange. I didn't think a bridge knew anything about such high-level protocols. I know that with different subnets, there is DHCP relay, but I don't think that applies here. I'd be interested to know what you find out. A -- Please don't CC me. Also _please_ read the following before posting: Documentation - http://www.debian.org/doc/ FAQ - http://www.debian.org/doc/FAQ/ Install manual (i386) - http://www.debian.org/releases/stable/i386/install -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
