Symbol: IPDF_LSO
usr/src/uts/common/inet/ip/conn_opt.c
2750
ixa->ixa_ipst->ips_ip_lso_outbound && (flags & IPDF_LSO) &&
usr/src/uts/common/inet/tcp/tcp.c
620
flags = IPDF_LSO | IPDF_ZCOPY;