Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 01 Dec 2008 21:27:15 -0800
From:      Jonathan Feally <vulture@netvulture.com>
To:        freebsd-stable@freebsd.org, freebsd-net@freebsd.org
Subject:   Re: dhclient doing DISCOVER with bad IP checksum - bge (7.1 show stopper??)
Message-ID:  <4934C733.4020506@netvulture.com>
In-Reply-To: <4933A00E.7080201@netvulture.com>
References:  <4933A00E.7080201@netvulture.com>

next in thread | previous in thread | raw e-mail | index | archive | help
Can someone please confirm or rule out my issue with dhclient sending 
bad IP checksum packets. It would really suck if 7.1 was released with a 
broken DHCP client.

Jonathan Feally wrote:
> Sorry for the cross-post, but this could be either lists problem.
>
> I have 2 boxes running 7-STABLE as of 20081130, both i386 SMP. One is 
> running ISC DHCPD 3.0.x from recent ports, and the other dhclient from 
> make world.
>
> The server is refusing to answer the DISCOVER request, as it thinks 
> the IP checksum is wrong, which tcpdump also confirms. Other DHCP 
> clients are working fine on this network, so I do not believe it to be 
> the network, server or dhcpd.
>
> Server is running a 2 Port Intel card - em driver.
>
> Client is a Dell PE1750 with 2 onboard NIC's - bge driver.
>
> I have tried turning off both RXCSUM and TXCSUM on both the client and 
> server machines with no luck. I also tried the second NIC on the 
> server with the same result.
>
> This setup was working just a couple of weeks ago, and the only thing 
> that has changed is updating the src for a make world. PXE booting 
> this server does result in an IP being issued, so it is pointing 
> towards something new/changed in 7-STABLE.
>
> I have attached a 3 packet dump of the DISCOVER requests.
>
> Can anybody shed some light on this for me?
>
> Thanks, -Jon
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> freebsd-net@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4934C733.4020506>