On Mon, Jan 7, 2013 at 4:05 PM, Paul Pearce <pea...@cs.berkeley.edu> wrote: > Hello folks, > > PROBLEM: > > vlan tagged packets that are injected via software are not picked up > by filters using recent (kernel commit > f3335031b9452baebfe49b8b5e55d3fe0c4677d1) > BPF vlan modifications. I suspect this is a problem with the Linux > kernel. > > linux-netdev and tcpdump-workers are both cc'd. >
Just to be clear, up until now we did not see this issue because the BPF filter code generated by libpcap would always look into packet offsets for vlan tag information. With the patch that I submitted to tcpdump-workers a day ago, it no longer looks into the packet but in the skb meta data (which is the right thing to do going forward). This breaks raw packets. We will have to handle this in the kernel to fix it. ani _______________________________________________ tcpdump-workers mailing list tcpdump-workers@lists.tcpdump.org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
