Date: Wed, 7 Sep 2005 16:27:49 +0200 From: Ihsan Dogan <ihsan@dogan.ch> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: dhcrelay is setting the relay ip address wrong Message-ID: <20050907142749.GA16981@dogan.ch> In-Reply-To: <44fyshnf9l.fsf@be-well.ilk.org> References: <20050905214641.GA28018@dogan.ch> <44fyshnf9l.fsf@be-well.ilk.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday, 07 Sep 2005 10:06 -0400, Lowell Gilbert wrote:
> > Did I something wrong? A bug?
>
> The relay agent is acting exactly the way it should. When it gets a
> DHCP request in from a client, it uses its own address ON THE CLIENT'S
> NETWORK for the relay agent address. This way, the DHCP server can
> tell which network the client is on, and thus which set of addresses
> to use for assigning an address to the client.
>
> What is the problem?
Perhaps I've sent this e-mail too early. I did some further
investigation and saw that:
select(7,{4 5 6},{},{},0x0) = 2 (0x2)
gettimeofday({1126033610 52754},0x0) = 0 (0x0)
read(0x6,0x806e000,0x1000) = 360 (0x168)
sendto(0x4,0xbfbfd950,0,0x0,{ AF_INET 213.144.141.146:67 },0x10) = 300 (0x12c)
write(2,0x8066cc0,62) = 62 (0x3e)
write(2,0x80620b8,1) = 1 (0x1)
recvfrom(0x4,0xbfbfe3a0,0,0x0,{ AF_INET 0.0.0.0:68 },0xbfbfe38c) = 300 (0x12c)
select(7,{4 5 6},{},{},0x0) = 1 (0x1)
gettimeofday({1126033610 72933},0x0) = 0 (0x0)
recvfrom(0x4,0xbfbfe3a0,0,0x0,{ AF_INET 213.144.141.146:67 },0xbfbfe38c) = 300 (0x12c)
The dhcrelay is forwarding the request from the client correctly
to the server, but it does not forward the reply from the server
to the client.
Ihsan
--
ihsan@dogan.ch http://ihsan.dogan.ch/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050907142749.GA16981>