Symbol: AR_LL_HDR_SLACK
usr/src/uts/common/inet/ip/ip_arp.c
1574
mp->b_cont = allocb(AR_LL_HDR_SLACK + ARH_FIXED_LEN + (hlen * 4) +
usr/src/uts/common/inet/ip/ip_arp.c
1582
cp = mp->b_cont->b_rptr + (AR_LL_HDR_SLACK + hlen + hlen);