On Fri, Jan 27, 2006 at 07:07:34AM +0100, Knut Petersen wrote:
>
> Well, there are no problems if SuSEfirewall2 is disabled. But have a look
> at the loaded modules:
> 
> ipt_MASQUERADE          3968  1
> pppoe                  15360  2
> pppox                   4616  1 pppoe

OK, although we can't rule out sky2/netfilter from the enquiry, I've
identified two bugs in ppp/pppoe that may be responsible for what you
are seeing.  So please try the following patch and let us know if the
problem still exists (or deteriorates/improves).

[PPP]: Fixed hardware RX checksum handling

When we pull the PPP protocol off the skb, we forgot to update the
hardware RX checksum.  This may lead to messages such as

        dsl0: hw csum failure.

Similarly, we need to clear the hardware checksum flag when we use
the existing packet to store the decompressed result.

Signed-off-by: Herbert Xu <[EMAIL PROTECTED]>

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -1610,6 +1610,8 @@ ppp_receive_nonmp_frame(struct ppp *ppp,
                }
                else if (!pskb_may_pull(skb, skb->len))
                        goto err;
+               else
+                       skb->ip_summed = CHECKSUM_NONE;
 
                len = slhc_uncompress(ppp->vj, skb->data + 2, skb->len - 2);
                if (len <= 0) {
@@ -1690,6 +1692,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp,
                        kfree_skb(skb);
                } else {
                        skb_pull(skb, 2);       /* chop off protocol */
+                       skb_postpull_rcsum(skb, skb->data - 2, 2);
                        skb->dev = ppp->dev;
                        skb->protocol = htons(npindex_to_ethertype[npi]);
                        skb->mac.raw = skb->data;

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