L2CAP_OPT_MTU_SIZE
opt->length = L2CAP_OPT_MTU_SIZE;
next += sizeof(l2cap_cfg_opt_t) + L2CAP_OPT_MTU_SIZE;
if (opt.length != L2CAP_OPT_MTU_SIZE)
m_copydata(m, 0, L2CAP_OPT_MTU_SIZE, &val.mtu);
if (len + sizeof(opt) + L2CAP_OPT_MTU_SIZE > sizeof(buf))
memcpy(buf + len, &val, L2CAP_OPT_MTU_SIZE);
len += L2CAP_OPT_MTU_SIZE;
if (opt.length != L2CAP_OPT_MTU_SIZE)
m_copydata(m, 0, L2CAP_OPT_MTU_SIZE, &val.mtu);