4.4BSD/usr/src/old/adb/common_scripts/mbufext

.>1
<1/"next"16t"nextpkt"16t"len"16t"data"na2XDXn"type"8t"flags"16t"totlen"16t"rcvif"ndxDpnn"ext_buf"16t"ext_free"16t"ext_size"nXpDn
*<1,*<1$<mbuf.nxt