ICMP_EXT_OFFSET
icmplen = uimin(ICMP_EXT_OFFSET, ntohs(oip->ip_len));
ICMP_EXT_OFFSET + sizeof(mpls_icmp_ext);
memset(&icp->icmp_ip, 0, ICMP_EXT_OFFSET);
memcpy(((char*)&icp->icmp_ip) + ICMP_EXT_OFFSET,
if (ip_len < (int)((ip->ip_hl << 2) + ICMP_EXT_OFFSET +
buf += (ip->ip_hl << 2) + ICMP_EXT_OFFSET;
#ifdef ICMP_EXT_OFFSET