It is not safe to push TSO option descriptors if pacer bypass is enabled, so to make sure that doesn't happen never push TSO option descriptors. Submitted by: Mark Spender <mspender at solarflare.com> Reviewed by: gnn Sponsored by: Solarflare Communications, Inc. MFC after: 2 days Differential Revision: https://reviews.freebsd.org/D8952