Symbol: prependb
usr/src/uts/common/io/ppp/sppptun/sppptun.c
2217
if ((mp = prependb(mp, 2, 1)) == NULL) {
usr/src/uts/common/io/ppp/sppptun/sppptun.c
936
mp = prependb(mp, sizeof (*poep) + len, POE_HDR_ALIGN);