On Tue, 20 Sep 2016 12:31:08 -0400, Sowmini Varadhan wrote: > The vxlan header is after the ethernet header (14 bytes), > IP header (20 bytes, assuming no options) and udp header (8 bytes).
If the VXLAN header is not aligned to 4 bytes, then IP header is not aligned to 4 bytes, too, and you have greater problems than just VXLAN. > Post the skb_reserve adjustments (see computations in in mld_newpack(), > for example), this triggers an unaligned access on sparc. IPv6 header is certainly not 20 bytes. If you see unaligned access, something is wrong. But I very much doubt that the problem is at the place you're trying to fix. Could you share the traces with us? Jiri