Dňa 07.08.2013 21:19 Sean Alexandre wrote / napísal(a): > On Wed, Aug 07, 2013 at 07:16:45PM +0100, Klaus wrote: >> On 07/08/13 18:24, Andy Hawkins wrote: >>> In article <20130807164822.GA7727@tuzo>, >>> Sean Alexandre<s...@alexan.org> wrote: >>>> No, unfortunately. I know it's not a MAC address issue. Both my TP-LINK >>>> home >>>> router and the Debian Wheezy machine that works get DHCP leases without any >>>> problems, and have different MAC addresses. >>>> >>>> I also asked my ISP about this, when I had them on the line to bring up my >>>> new cable modem. They said any MAC address is fine. Just power the cable >>>> modem down for 30 seconds first. >>> >>> Ok, I did say I was kind of stating the obvious! >>> >>> Next thing I'd be doing is using tshark or similar to sniff the traffic >>> being seen on the Debian box. >>> >>> Andy >>> >>> >> Just more of the obvious stuff: >> You say it's a new cable modem, there is a home router, and there is >> at least one other Debian Wheezy box. >> Does your ISP provide you with one, or more than one IP address? If >> one, the router probably translates this "public" IP address to your >> "private" LAN. Does the router function as a DHCP server, or do you >> have a dedicated box on your LAN? Can you check the logs of your LAN >> DHCP server for entries matching the non-functioning box? > > There's no NAT in what I'm doing, no. The boxes in each case get a public > IP address from my ISP (or try to.) The different cases are: > > CASE 1, works: > [cable modem]---[TP-LINK router] > > CASE 2, works: > [cable modem]---[wheezy box that works] > > CASE 3, doesn't work: > [cable modem]---[wheezy box that doesn't work] > > I attach a laptop to the TP-LINK router to see that it got an IP address, so > there's NAT there. But, NAT doens't come into play for the larger problem, if > that's what you're asking. >
is your network like this, please: ------------- | ISP | ------------- | | ------------- | modem | ------------- | ------------------------------ | | | ------------- ------------- ------------- | Debian I | | Debian II | | TP-Link | ------------- ------------- ------------- or like this? ------------- | ISP | ------------- | | ------------- | modem | ------------- | | ------------- | TP-Link | ------------- | ------------------ | | ------------- ------------- | Debian I | | Debian II | ------------- ------------- regards -- Slavko http://slavino.sk
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