On Fri, Jul 09, 2010 at 01:29:13AM +0300, Michael S. Tsirkin wrote: > This adds a `CHECKSUM' target, which can be used in the iptables mangle > table. > > You can use this target to compute and fill in the checksum in > an IP packet that lacks a checksum. This is particularly useful, > if you need to work around old applications such as dhcp clients, > that do not work well with checksum offloads, but don't want to > disable checksum offload in your device. > > The problem happens in the field with virtualized applications. > For reference, see Red Hat bz 605555, as well as > http://www.spinics.net/lists/kvm/msg37660.html > > Typical expected use (helps old dhclient binary running in a VM): > iptables -A POSTROUTING -t mangle -p udp --dport 68 -j CHECKSUM > --checksum-fill > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> I'd think that this target would be protocol-agnostic, no? Cheers, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
