> diff --git sys/sys/mbuf.h sys/sys/mbuf.h
> index 202ce8ced8b..7ca1a779fe0 100644
> --- sys/sys/mbuf.h
> +++ sys/sys/mbuf.h
> @@ -127,10 +127,11 @@ struct pkthdr {
> u_int16_t ph_flowid; /* pseudo unique flow id */
> u_int16_t csum_flags; /* checksum flags */
> u_int16_t ether_vtag; /* Ethernet 802.1p+Q vlan tag */
> u_int ph_rtableid; /* routing table id */
> u_int ph_ifidx; /* rcv interface index */
> + int64_t ph_timestamp; /* packet timestamp */
That field ought to be moved much earlier, in order to prevent wasting
an extra 32 bits due to alignment.
